adj · adv · 11 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈsɪə̯.ɹi.əs/
Received-Pronunciation:/ˈsɪː.ɹi.əs/
UK:Recorded audio is listed in the source snapshot.
requiring effort or concentration; complex and not easy to answer or solve
Definition source: Princeton WordNet 3.0
Examples
raised serious objections to the proposal
the plan has a serious flaw
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
adjective satellite
Meaning 10
of great consequence
Definition source: Princeton WordNet 3.0
Examples
marriage is a serious matter
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
adjective satellite
Meaning 11
appealing to the mind
Definition source: Princeton WordNet 3.0
Examples
good music
a serious book
Meaning relationships
Synonyms: good
Antonyms: none provided
History
Etymology
Etymology tree Proto-Indo-European *seh1- Proto-Indo-European *-rós Proto-Italic *sēros Latin sērus Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius ? Proto-Indo-European *swer- Proto-Indo-European *-yós Proto-Italic *swerjos? Latin sērius Proto-Indo-European *h3ed- Proto-Indo-European *-os Proto-Indo-European *h3édosder.? Proto-Italic *-ŏ̄dsos? Old Latin -ōssus Latin -ōsus Medieval Latin sēriōsus Old French serieuxbor. Middle English seryows English serious From Middle English seryows, from Old French serieux, from Medieval Latin sēriōsus, an extension of Latin sērius (“grave, earnest, serious”), possibly ultimately from Proto-Indo-European *swer- (“heavy”). (If this root is correct, cognate with German schwer (“heavy, difficult, severe”), Old English swǣr (“heavy, grave, grievous”). More at swear, sweer. However, see sērius for an alternative derivation of the Latin.)
Across languages
Translations
204 source translations are retained for this English entry.
Afrikaans:
ernstig
— without humor or expression of happiness
Arabic:
جِدِّيّ
(jiddiyy)
— without humor or expression of happiness
Armenian:
լուրջ
(lurǰ)
— without humor or expression of happiness
Azerbaijani:
ciddi
— without humor or expression of happiness
Bashkir:
етди
(yetdi)
— without humor or expression of happiness
Belarusian:
сур'ё́зны
(surʺjózny)
— without humor or expression of happiness
Bulgarian:
сериозен
(seriozen)
— without humor or expression of happiness
Catalan:
seriós
— without humor or expression of happiness
Chinese Mandarin:
嚴肅 /严肃
(yánsù)
— without humor or expression of happiness
Czech:
vážný
— without humor or expression of happiness
Czech:
seriózní
— without humor or expression of happiness
Dutch:
serieus
— without humor or expression of happiness
Dutch:
ernstig
— without humor or expression of happiness
Esperanto:
serioza
— without humor or expression of happiness
Estonian:
tõsine
— without humor or expression of happiness
Finnish:
vakava
— without humor or expression of happiness
Finnish:
vakavamielinen
— without humor or expression of happiness
Finnish:
totinen
— without humor or expression of happiness
French:
sérieux
— without humor or expression of happiness
Galician:
serio
— without humor or expression of happiness
Georgian:
სერიოზული
(seriozuli)
— without humor or expression of happiness
German:
ernst
— without humor or expression of happiness
German:
seriös
— without humor or expression of happiness
Greek:
σοβαρός
(sovarós)
— without humor or expression of happiness
Hindi:
गंभीर
(gambhīr)
— without humor or expression of happiness
Hungarian:
komoly
— without humor or expression of happiness
Indonesian:
serius
— without humor or expression of happiness
Italian:
serio
— without humor or expression of happiness
Japanese:
真面目
(majime)
— without humor or expression of happiness
Japanese:
真剣
(shinken)
— without humor or expression of happiness
Japanese:
本気
(honki)
— without humor or expression of happiness
Kazakh:
байсалды
(baisaldy)
— without humor or expression of happiness
Kazakh:
байыпты
(baiypty)
— without humor or expression of happiness
Korean:
엄숙(嚴肅)하다
(eomsukhada)
— without humor or expression of happiness
Korean:
진지(眞摯)하다
(jinjihada)
— without humor or expression of happiness
Ladino:
seriozo
— without humor or expression of happiness
Latin:
sērius
— without humor or expression of happiness
Latvian:
nopietns
— without humor or expression of happiness
Louisiana Creole:
sériyé
— without humor or expression of happiness
Norman:
séthieux
— without humor or expression of happiness
Occitan:
seriós
— without humor or expression of happiness
Persian:
جدی
(jeddi)
— without humor or expression of happiness
Plautdietsch:
iernst
— without humor or expression of happiness
Plautdietsch:
ieeboa
— without humor or expression of happiness
Polish:
poważny
— without humor or expression of happiness
Portuguese:
sério
— without humor or expression of happiness
Romanian:
serios
— without humor or expression of happiness
Russian:
серьёзный
(serʹjóznyj)
— without humor or expression of happiness
Serbo-Croatian:
ȍzbīljan
— without humor or expression of happiness
Serbo-Croatian:
hládan
— without humor or expression of happiness
Sicilian:
seriu
— without humor or expression of happiness
Sicilian:
tristu
— without humor or expression of happiness
Spanish:
serio
— without humor or expression of happiness
Swedish:
allvarsam
— without humor or expression of happiness
Thai:
เคร่งขรึม
(krêng-krʉ̌m)
— without humor or expression of happiness
Thai:
เคร่งเครียด
(krêng-krîiat)
— without humor or expression of happiness
Thai:
ซีเรียส
(sii-rîiat)
— without humor or expression of happiness
Turkish:
ciddi
— without humor or expression of happiness
Turkish:
vezmin
— without humor or expression of happiness
Turkish:
salmaklı
— without humor or expression of happiness
Ottoman Turkish:
دولك
(dölek)
— without humor or expression of happiness
Ottoman Turkish:
آغر
(ağır)
— without humor or expression of happiness
Ukrainian:
серйо́зний
(serjóznyj)
— without humor or expression of happiness
Welsh:
difrifol
— without humor or expression of happiness
Afrikaans:
ernstig
— important; weighty; not trifling; leaving no room for play
Arabic:
جَدِّيّ
(jaddiyy)
— important; weighty; not trifling; leaving no room for play
Arabic:
جَادّ
(jādd)
— important; weighty; not trifling; leaving no room for play
Armenian:
լուրջ
(lurǰ)
— important; weighty; not trifling; leaving no room for play
Bashkir:
етди
(yetdi)
— important; weighty; not trifling; leaving no room for play
Belarusian:
сур'ё́зны
(surʺjózny)
— important; weighty; not trifling; leaving no room for play
Bulgarian:
важен
(važen)
— important; weighty; not trifling; leaving no room for play
Bulgarian:
сериозен
(seriozen)
— important; weighty; not trifling; leaving no room for play
Catalan:
seriós
— important; weighty; not trifling; leaving no room for play
Chinese Mandarin:
認真 /认真
(rènzhēn)
— important; weighty; not trifling; leaving no room for play
Chinese Mandarin:
嚴重 /严重
(yánzhòng)
— important; weighty; not trifling; leaving no room for play
Chinese Mandarin:
沉重
(chénzhòng)
— important; weighty; not trifling; leaving no room for play
Czech:
vážný
— important; weighty; not trifling; leaving no room for play
Czech:
seriózní
— important; weighty; not trifling; leaving no room for play
Danish:
alvorlig
— important; weighty; not trifling; leaving no room for play
Dutch:
serieus
— important; weighty; not trifling; leaving no room for play
Esperanto:
serioza
— important; weighty; not trifling; leaving no room for play
Esperanto:
grava
— important; weighty; not trifling; leaving no room for play
Estonian:
tõsine
— important; weighty; not trifling; leaving no room for play
Faroese:
álvarsamur
— important; weighty; not trifling; leaving no room for play
Finnish:
vakava
— important; weighty; not trifling; leaving no room for play
French:
sérieux
— important; weighty; not trifling; leaving no room for play
Galician:
serio
— important; weighty; not trifling; leaving no room for play
Georgian:
მნიშვნელოვანი
(mnišvnelovani)
— important; weighty; not trifling; leaving no room for play
Georgian:
საყურადღებო
(saq̇uradɣebo)
— important; weighty; not trifling; leaving no room for play
Georgian:
ღრმააზროვანი
(ɣrmaazrovani)
— important; weighty; not trifling; leaving no room for play
Georgian:
სერიოზული
(seriozuli)
— important; weighty; not trifling; leaving no room for play
German:
ernst
— important; weighty; not trifling; leaving no room for play
German:
ernsthaft
— important; weighty; not trifling; leaving no room for play
German:
schwerwiegend
— important; weighty; not trifling; leaving no room for play
German:
ernst zu nehmend
— important; weighty; not trifling; leaving no room for play
German:
èèrnscht
— important; weighty; not trifling; leaving no room for play
Greek:
σοβαρός
(sovarós)
— important; weighty; not trifling; leaving no room for play
Ancient Greek:
σπουδαῖος
(spoudaîos)
— important; weighty; not trifling; leaving no room for play
Hebrew:
רציני
(r'tsiní)
— important; weighty; not trifling; leaving no room for play
Hungarian:
komoly
— important; weighty; not trifling; leaving no room for play
Hungarian:
súlyos
— important; weighty; not trifling; leaving no room for play
Hungarian:
fontos
— important; weighty; not trifling; leaving no room for play
Hungarian:
jelentős
— important; weighty; not trifling; leaving no room for play
Hungarian:
nagy horderejű
— important; weighty; not trifling; leaving no room for play
Icelandic:
alvarlegur
— important; weighty; not trifling; leaving no room for play
Italian:
serio
— important; weighty; not trifling; leaving no room for play
Italian:
grave
— important; weighty; not trifling; leaving no room for play
Italian:
critico
— important; weighty; not trifling; leaving no room for play
Japanese:
真面目
(majime)
— important; weighty; not trifling; leaving no room for play
Japanese:
真剣
(shinken)
— important; weighty; not trifling; leaving no room for play
Japanese:
深刻
(shinkoku)
— important; weighty; not trifling; leaving no room for play
Khmer:
ដុនដាប
(don daap)
— important; weighty; not trifling; leaving no room for play
Korean:
심각한
(simgakhan)
— important; weighty; not trifling; leaving no room for play
Ladino:
seriozo
— important; weighty; not trifling; leaving no room for play
Latin:
gravis
— important; weighty; not trifling; leaving no room for play
Latin:
sevērus
— important; weighty; not trifling; leaving no room for play
Latin:
sonticus
— important; weighty; not trifling; leaving no room for play
Latvian:
svarīgs
— important; weighty; not trifling; leaving no room for play
Louisiana Creole:
sériyé
— important; weighty; not trifling; leaving no room for play
Malay:
serius
— important; weighty; not trifling; leaving no room for play
Māori:
taumaha
— important; weighty; not trifling; leaving no room for play
Māori:
taimaha
— important; weighty; not trifling; leaving no room for play
Māori:
tūpoupou
— important; weighty; not trifling; leaving no room for play
Māori:
motuhēhē
— important; weighty; not trifling; leaving no room for play
Norman:
séthieux
— important; weighty; not trifling; leaving no room for play
Norwegian:
alvorlig
— important; weighty; not trifling; leaving no room for play
Norwegian:
seriøs
— important; weighty; not trifling; leaving no room for play
Occitan:
seriós
— important; weighty; not trifling; leaving no room for play
Persian:
جدی
(jeddi)
— important; weighty; not trifling; leaving no room for play
Plautdietsch:
schlemm
— important; weighty; not trifling; leaving no room for play
Plautdietsch:
iernst
— important; weighty; not trifling; leaving no room for play
Polish:
poważny
— important; weighty; not trifling; leaving no room for play
Portuguese:
sério
— important; weighty; not trifling; leaving no room for play
Russian:
серьёзный
(serʹjóznyj)
— important; weighty; not trifling; leaving no room for play
Samoan:
faigatā
— important; weighty; not trifling; leaving no room for play
Sanskrit:
गुरु
(guru)
— important; weighty; not trifling; leaving no room for play
Serbo-Croatian:
ȍzbīljan
— important; weighty; not trifling; leaving no room for play
Serbo-Croatian:
vážan
— important; weighty; not trifling; leaving no room for play
Serbo-Croatian:
znȁčājan
— important; weighty; not trifling; leaving no room for play
Sicilian:
mpurtanti
— important; weighty; not trifling; leaving no room for play
Sicilian:
mprisiusu
— important; weighty; not trifling; leaving no room for play
Sicilian:
seriu
— important; weighty; not trifling; leaving no room for play
Spanish:
serio
— important; weighty; not trifling; leaving no room for play
Swedish:
allvarlig
— important; weighty; not trifling; leaving no room for play
Swedish:
seriös
— important; weighty; not trifling; leaving no room for play
Tagalog:
malma
— important; weighty; not trifling; leaving no room for play
Tetum:
seriu
— important; weighty; not trifling; leaving no room for play
Thai:
จริงจัง
(jing-jang)
— important; weighty; not trifling; leaving no room for play
Thai:
ซีเรียส
(sii-rîiat)
— important; weighty; not trifling; leaving no room for play
Tongan:
mahuʻinga
— important; weighty; not trifling; leaving no room for play
Turkish:
ciddi
— important; weighty; not trifling; leaving no room for play
Turkish:
salmaklı
— important; weighty; not trifling; leaving no room for play
Ukrainian:
серйо́зний
(serjóznyj)
— important; weighty; not trifling; leaving no room for play
Vietnamese:
nghiêm trọng
— important; weighty; not trifling; leaving no room for play
Welsh:
difrifol
— important; weighty; not trifling; leaving no room for play
Afrikaans:
ernstig
— really intending what is said; being in earnest
Arabic:
جَدِّيّ
(jaddiyy)
— really intending what is said; being in earnest
Arabic:
جَادّ
(jādd)
— really intending what is said; being in earnest
Armenian:
լուրջ
(lurǰ)
— really intending what is said; being in earnest
Bashkir:
етди
(yetdi)
— really intending what is said; being in earnest
Belarusian:
сур'ё́зны
(surʺjózny)
— really intending what is said; being in earnest
Bulgarian:
сериозен
(seriozen)
— really intending what is said; being in earnest
Catalan:
seriós
— really intending what is said; being in earnest
Chinese Mandarin:
認真 /认真
(rènzhēn)
— really intending what is said; being in earnest
Chinese Mandarin:
嚴重 /严重
(yánzhòng)
— really intending what is said; being in earnest
Czech:
vážný
— really intending what is said; being in earnest
Czech:
seriózní
— really intending what is said; being in earnest
Dutch:
ernstig
— really intending what is said; being in earnest
Dutch:
serieus
— really intending what is said; being in earnest
Finnish:
vakava
— really intending what is said; being in earnest
French:
sérieux
— really intending what is said; being in earnest
Galician:
serio
— really intending what is said; being in earnest
German:
ernsthaft
— really intending what is said; being in earnest
Greek:
σοβαρός
(sovarós)
— really intending what is said; being in earnest
Ancient Greek:
σπουδαῖος
(spoudaîos)
— really intending what is said; being in earnest
Hebrew:
רציני
(r'tsiní)
— really intending what is said; being in earnest
Hungarian:
komoly
— really intending what is said; being in earnest
Hungarian:
valós
— really intending what is said; being in earnest
Hungarian:
valódi
— really intending what is said; being in earnest
Hungarian:
őszinte
— really intending what is said; being in earnest
Irish:
dáiríre
— really intending what is said; being in earnest
Italian:
serio
— really intending what is said; being in earnest
Japanese:
真面目
(majime)
— really intending what is said; being in earnest
Korean:
심각한
(simgakhan)
— really intending what is said; being in earnest
Ladino:
seriozo
— really intending what is said; being in earnest
Latin:
sērius
— really intending what is said; being in earnest
Latvian:
nopietns
— really intending what is said; being in earnest
Louisiana Creole:
sériyé
— really intending what is said; being in earnest
Norman:
séthieux
— really intending what is said; being in earnest
Occitan:
seriós
— really intending what is said; being in earnest
Portuguese:
sério
— really intending what is said; being in earnest
Russian:
серьёзный
(serʹjóznyj)
— really intending what is said; being in earnest
Serbo-Croatian:
ȍzbīljan
— really intending what is said; being in earnest
Sicilian:
anestu
— really intending what is said; being in earnest
Sicilian:
cuscinziusu
— really intending what is said; being in earnest
Sicilian:
judizziusu
— really intending what is said; being in earnest
Sicilian:
seriu
— really intending what is said; being in earnest
Sicilian:
sinceru
— really intending what is said; being in earnest
Spanish:
serio
— really intending what is said; being in earnest
Swedish:
seriös
— really intending what is said; being in earnest
Thai:
จริงจัง
(jing-jang)
— really intending what is said; being in earnest
Thai:
ซีเรียส
(sii-rîiat)
— really intending what is said; being in earnest
Ukrainian:
серйо́зний
(serjóznyj)
— really intending what is said; being in earnest
Welsh:
o ddifri'
— really intending what is said; being in earnest