verb · 9 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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/ˈstɹɛŋ(k)θən/
/ˈstɹɛnθən/
[ˈstɹeɪŋ(k)θən]pre-/ŋ/ tensing
US:Recorded audio is listed in the source snapshot.
rhymes with -ɛŋkθən
CMU ARPABET:S T R EH1 NG TH AH0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
verb
Meaning 1
To make strong or stronger; to add strength to; to increase the strength of; to fortify.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Examples
strengthen a muscle
strengthen a wall
strengthen one's willpower
strengthen one's authority
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
verb
Meaning 2
To empower; to give moral strength to; to encourage; to enhearten.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
verb
Meaning 3
To augment; to improve; to intensify.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
verb
Meaning 4
To reinforce, to add to, to support (someone or something)
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Examples
strengthen an army
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
verb
Meaning 5
To substantiate; to corroborate (a belief, argument, etc.)
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Examples
strengthen the cause
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
verb
Meaning 6
To grow strong or stronger.
Definition source: English Wiktionary via Wiktextract
Usage: intransitive
No example sentence was provided for this meaning.
From rare Middle English strengthenen (14th c.), from earlier strengthen (12th c.), where -en is the infinitive ending. Probably the original form was reinterpreted as strength + -en around the time when the infinitive ending was being apocopated in late Middle English.
Across languages
Translations
134 source translations are retained for this English entry.
Afrikaans:
versterk
— to make strong or stronger
Albanian:
forcoj
— to make strong or stronger
Arabic:
قَوَّى
(qawwā)
— to make strong or stronger
Arabic:
عَزَّزَ
(ʕazzaza)
— to make strong or stronger
Aragonese:
fortaleixer
— to make strong or stronger
Aragonese:
fortalexer
— to make strong or stronger
Aragonese:
enfortir
— to make strong or stronger
Armenian:
զորացնել
(zoracʻnel)
— to make strong or stronger
Armenian:
ուժեղացնել
(užeġacʻnel)
— to make strong or stronger
Bulgarian:
уси́лвам
(usílvam)
— to make strong or stronger
Catalan:
enfortir
— to make strong or stronger
Catalan:
reforçar
— to make strong or stronger
Cherokee:
ᎠᏍᏓᏱᏗᎠ
(asdayidia)
— to make strong or stronger
Chinese Mandarin:
加強 /加强
(jiāqiáng)
— to make strong or stronger
Crimean Tatar:
pekitmek
— to make strong or stronger
Czech:
posílit
— to make strong or stronger
Dutch:
versterken
— to make strong or stronger
Esperanto:
fortigi
— to make strong or stronger
Esperanto:
plifortigi
— to make strong or stronger
Estonian:
tugevdama
— to make strong or stronger
Finnish:
vahvistaa
— to make strong or stronger
French:
renforcer
— to make strong or stronger
French:
affermir
— to make strong or stronger
French:
raffermir
— to make strong or stronger
French:
fortifier
— to make strong or stronger
Galician:
fortalecer
— to make strong or stronger
Georgian:
გაძლიერება
(gaʒliereba)
— to make strong or stronger
Georgian:
გამაგრება
(gamagreba)
— to make strong or stronger
German:
verstärken
— to make strong or stronger
German:
stärken
— to make strong or stronger
Greek:
ενισχύω
(enischýo)
— to make strong or stronger
Ancient Greek:
ἰσχυρόω
(iskhuróō)
— to make strong or stronger
Ancient Greek:
ῥώννυμι
(rhṓnnumi)
— to make strong or stronger
Hawaiian:
hoʻoikaika
— to make strong or stronger
Hebrew:
חִזֵּק
(khizék)
— to make strong or stronger
Hindi:
दृढ़ाना
(dŕṛhānā)
— to make strong or stronger
Hungarian:
megerősít
— to make strong or stronger
Hungarian:
erősít
— to make strong or stronger
Ido:
fortigar
— to make strong or stronger
Ingrian:
vahvistaa
— to make strong or stronger
Ingrian:
vahventaa
— to make strong or stronger
Ingrian:
vahvenoittaa
— to make strong or stronger
Ingrian:
vahvita
— to make strong or stronger
Ingrian:
vahvissuttaa
— to make strong or stronger
Irish:
neartaigh
— to make strong or stronger
Italian:
rinforzare
— to make strong or stronger
Italian:
rafforzare
— to make strong or stronger
Italian:
corroborare
— to make strong or stronger
Japanese:
強くする
(tsuyoku suru)
— to make strong or stronger
Japanese:
強める
(tsuyomeru)
— to make strong or stronger
Kannada:
ಬಲಗೊಳ್ಳು
(balagoḷḷu)
— to make strong or stronger
Ladino:
enfuerteser
— to make strong or stronger
Ladino:
enforteser
— to make strong or stronger
Ladino:
enreziar
— to make strong or stronger
Ladino:
arreziar
— to make strong or stronger
Latin:
rōborō
— to make strong or stronger
Latin:
corrōborō
— to make strong or stronger
Latin:
firmō
— to make strong or stronger
Latvian:
stiprināt
— to make strong or stronger
Lü:
ᦶᦏᧄᦶᦃᧂᦶᦣᧂ
(ṫhaemẋaenghaeng)
— to make strong or stronger
Māori:
whakakaha
— to make strong or stronger
Māori:
whakamarohi
— to make strong or stronger
Middle English:
strengthen
— to make strong or stronger
Polish:
wzmacniać
— to make strong or stronger
Polish:
wzmocnić
— to make strong or stronger
Polish:
pokrzepiać
— to make strong or stronger
Portuguese:
fortalecer
— to make strong or stronger
Portuguese:
reforçar
— to make strong or stronger
Romanian:
întări
— to make strong or stronger
Russian:
уси́ливать
(usílivatʹ)
— to make strong or stronger
Russian:
уси́лить
(usílitʹ)
— to make strong or stronger
Serbo-Croatian:
оја̀чати
— to make strong or stronger
Serbo-Croatian:
ojàčati
— to make strong or stronger
Spanish:
fortalecer
— to make strong or stronger
Spanish:
fortificar
— to make strong or stronger
Spanish:
reforzar
— to make strong or stronger
Swedish:
förstärka
— to make strong or stronger
Swedish:
stärka
— to make strong or stronger
Tagalog:
lakasan
— to make strong or stronger
Tok Pisin:
strongim
— to make strong or stronger
Turkish:
güçlendirmek
— to make strong or stronger
Turkish:
kuvvetlendirmek
— to make strong or stronger
Welsh:
cryfhau
— to make strong or stronger
Dutch:
bezielen
— to animate
Dutch:
tot leven wekken
— to animate
Dutch:
versterken
— to animate
Finnish:
vahvistaa
— to animate
Finnish:
innostaa
— to animate
French:
fortifier
— to animate
German:
bestärken
— to animate
German:
stärken
— to animate
Italian:
animare
— to animate
Latin:
animo
— to animate
Middle English:
strengthen
— to animate
Serbo-Croatian:
potàknuti
— to animate
Serbo-Croatian:
osokòliti
— to animate
Spanish:
animar
— to animate
Swahili:
kuimarisha
— to animate
Turkish:
yüreklendirmek
— to animate
Bulgarian:
засилвам
(zasilvam)
— to augment
Dutch:
kracht geven
— to augment
Finnish:
vahvistaa
— to augment
Finnish:
voimistaa
— to augment
German:
verstärken
— to augment
Italian:
intensificare
— to augment
Italian:
aumentare
— to augment
Latin:
augeo
— to augment
Māori:
whakamarohi
— to augment
Middle English:
strengthen
— to augment
Turkish:
pekiştirmek
— to augment
Armenian:
ամրանալ
(amranal)
— to grow strong or stronger
Bulgarian:
усилвам се
(usilvam se)
— to grow strong or stronger
Finnish:
vahvistua
— to grow strong or stronger
Finnish:
voimistua
— to grow strong or stronger
German:
stärker werden
— to grow strong or stronger
Hungarian:
megerősödik
— to grow strong or stronger
Hungarian:
erősödik
— to grow strong or stronger
Ingrian:
ramoittua
— to grow strong or stronger
Ingrian:
voimistua
— to grow strong or stronger
Ingrian:
vahveta
— to grow strong or stronger
Ingrian:
vahvistua
— to grow strong or stronger
Italian:
rinforzarsi
— to grow strong or stronger
Italian:
rafforzarsi
— to grow strong or stronger
Latin:
firmor
— to grow strong or stronger
Polish:
wzmacniać się
— to grow strong or stronger
Polish:
wzmocnić się
— to grow strong or stronger
Polish:
stawać się mocniejszym
— to grow strong or stronger
Polish:
stawać się coraz silniejszym
— to grow strong or stronger
Romanian:
deveni mai puternic
— to grow strong or stronger
Serbo-Croatian:
оја̀чати
— to grow strong or stronger
Serbo-Croatian:
ojàčati
— to grow strong or stronger
Tok Pisin:
strongim
— to grow strong or stronger
Turkish:
güçlenmek
— to grow strong or stronger
Turkish:
kuvvetlenmek
— to grow strong or stronger