noun · 2 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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Australian:/ˈnəʉ.ɪt.oːl/
Southern-England:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
1
noun
Meaning 1
Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.
Definition source: English Wiktionary via Wiktextract
Usage: US, derogatory
Examples
We had it all figured out, but this know-it-all marched in with "the correct way of solving it", leaving our experiment in shambles.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
someone who thinks he knows everything and refuses to accept advice or information from others
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: know-all
Antonyms: none provided
Broader terms: egotist, egoist, swellhead
History
Etymology
Etymology tree English know English it Proto-Indo-European *h2el-der.? Proto-Indo-European *h2elnós Proto-Germanic *allaz Proto-West Germanic *all Old English eall Middle English all English all English know-it-all From know + it + all.
Across languages
Translations
93 source translations are retained for this English entry.
Antigua and Barbuda Creole English:
kumkumsa
— one who obnoxiously claims to be knowledgeable on a subject
Armenian:
ամենագետ
(amenaget)
— one who obnoxiously claims to be knowledgeable on a subject
Armenian:
ամենագիտակ
(amenagitak)
— one who obnoxiously claims to be knowledgeable on a subject
Asturian:
sabichegu
— one who obnoxiously claims to be knowledgeable on a subject
Asturian:
sabicheru
— one who obnoxiously claims to be knowledgeable on a subject
Asturian:
sabelotoo
— one who obnoxiously claims to be knowledgeable on a subject
Asturian:
enteráu
— one who obnoxiously claims to be knowledgeable on a subject
Azerbaijani:
hərşeyşünas
— one who obnoxiously claims to be knowledgeable on a subject
Azerbaijani:
ağıllıdıllaq
— one who obnoxiously claims to be knowledgeable on a subject
Basque:
sasijakintsu
— one who obnoxiously claims to be knowledgeable on a subject
Basque:
sasijakitun
— one who obnoxiously claims to be knowledgeable on a subject
Bulgarian:
всезнайко
(vseznajko)
— one who obnoxiously claims to be knowledgeable on a subject
Catalan:
setciències
— one who obnoxiously claims to be knowledgeable on a subject
Catalan:
mestretites
— one who obnoxiously claims to be knowledgeable on a subject
Chinese Mandarin:
萬事通 /万事通
(wànshìtōng)
— one who obnoxiously claims to be knowledgeable on a subject
Czech:
vševěd
— one who obnoxiously claims to be knowledgeable on a subject
Czech:
rozumbrada
— one who obnoxiously claims to be knowledgeable on a subject
Danish:
klogeåge
— one who obnoxiously claims to be knowledgeable on a subject
Danish:
besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
Dutch:
betweter
— one who obnoxiously claims to be knowledgeable on a subject
Dutch:
wijsneus
— one who obnoxiously claims to be knowledgeable on a subject
Finnish:
kaikkitietävä
— one who obnoxiously claims to be knowledgeable on a subject
Finnish:
besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
French:
je-sais-tout
— one who obnoxiously claims to be knowledgeable on a subject
French:
ti-Jo Connaissant
— one who obnoxiously claims to be knowledgeable on a subject
French:
toutologue
— one who obnoxiously claims to be knowledgeable on a subject
West-Frisian:
wiisprater
— one who obnoxiously claims to be knowledgeable on a subject
West-Frisian:
wiisnoas
— one who obnoxiously claims to be knowledgeable on a subject
Galician:
sabichón
— one who obnoxiously claims to be knowledgeable on a subject
Galician:
sabichona
— one who obnoxiously claims to be knowledgeable on a subject
Georgian:
ჭკუის კოლოფი
(č̣ḳuis ḳolopi)
— one who obnoxiously claims to be knowledgeable on a subject
Georgian:
ყოვლისმცოდნე
(q̇ovlismcodne)
— one who obnoxiously claims to be knowledgeable on a subject
German:
Besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
German:
Besserwisserin
— one who obnoxiously claims to be knowledgeable on a subject
German:
Neunmalkluger
— one who obnoxiously claims to be knowledgeable on a subject
German:
Neunmalkluge
— one who obnoxiously claims to be knowledgeable on a subject
German:
Rechthaber
— one who obnoxiously claims to be knowledgeable on a subject
German:
Rechthaberin
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schulmeister
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schulmeisterin
— one who obnoxiously claims to be knowledgeable on a subject
German:
Klugscheißer
— one who obnoxiously claims to be knowledgeable on a subject
German:
Klugscheißerin
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schlaumeier
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schlaumeierin
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schlauberger
— one who obnoxiously claims to be knowledgeable on a subject
German:
Schlaubergerin
— one who obnoxiously claims to be knowledgeable on a subject
Greek:
ξερόλας
(xerólas)
— one who obnoxiously claims to be knowledgeable on a subject
Greek:
ξερόλα
(xeróla)
— one who obnoxiously claims to be knowledgeable on a subject
Indonesian:
sok pintar
— one who obnoxiously claims to be knowledgeable on a subject
Indonesian:
sok tau
— one who obnoxiously claims to be knowledgeable on a subject
Italian:
sapientone
— one who obnoxiously claims to be knowledgeable on a subject
Italian:
sa tutto
— one who obnoxiously claims to be knowledgeable on a subject
Italian:
saputello
— one who obnoxiously claims to be knowledgeable on a subject
Italian:
tuttologo
— one who obnoxiously claims to be knowledgeable on a subject
Italian:
nientologo
— one who obnoxiously claims to be knowledgeable on a subject
Japanese:
知ったかぶりをする人
(shittakaburi o suru hito)
— one who obnoxiously claims to be knowledgeable on a subject
Macedonian:
се́знајко
(séznajko)
— one who obnoxiously claims to be knowledgeable on a subject
Malay:
palatao
— one who obnoxiously claims to be knowledgeable on a subject
Māori:
whakaputa mōhio
— one who obnoxiously claims to be knowledgeable on a subject
Māori:
ngutu huia
— one who obnoxiously claims to be knowledgeable on a subject
Norwegian Bokmål:
bedreviter
— one who obnoxiously claims to be knowledgeable on a subject
Norwegian Bokmål:
viktigper
— one who obnoxiously claims to be knowledgeable on a subject
Norwegian Bokmål:
forståsegpåer
— one who obnoxiously claims to be knowledgeable on a subject
Norwegian Bokmål:
besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
Persian:
علامه دهر
('allâme-ye dahr)
— one who obnoxiously claims to be knowledgeable on a subject
Plautdietsch:
Aulweet
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
przemądrzalec
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
mądraliński
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
mądrala
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
chłopek-roztropek
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
Polish:
zarozumialec
— one who obnoxiously claims to be knowledgeable on a subject
Portuguese:
sabichão
— one who obnoxiously claims to be knowledgeable on a subject
Portuguese:
sabichona
— one who obnoxiously claims to be knowledgeable on a subject
Portuguese:
sabe-tudo
— one who obnoxiously claims to be knowledgeable on a subject
Russian:
всезна́йка
(vseznájka)
— one who obnoxiously claims to be knowledgeable on a subject
Russian:
зна́йка
(znájka)
— one who obnoxiously claims to be knowledgeable on a subject
Serbo-Croatian:
sveznalica
— one who obnoxiously claims to be knowledgeable on a subject
Serbo-Croatian:
свезналица
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
sabelotodo
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
sabiondo
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
todólogo
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
cuñado
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
cerebruto
— one who obnoxiously claims to be knowledgeable on a subject
Spanish:
sabidillo
— one who obnoxiously claims to be knowledgeable on a subject
Sranan Tongo:
sabiso
— one who obnoxiously claims to be knowledgeable on a subject
Swahili:
mjuba
— one who obnoxiously claims to be knowledgeable on a subject
Swedish:
viktigpetter
— one who obnoxiously claims to be knowledgeable on a subject
Swedish:
besserwisser
— one who obnoxiously claims to be knowledgeable on a subject
Turkish:
çok bilmiş
— one who obnoxiously claims to be knowledgeable on a subject
Turkish:
herbokolog
— one who obnoxiously claims to be knowledgeable on a subject
Ukrainian:
всезна́йко
(vseznájko)
— one who obnoxiously claims to be knowledgeable on a subject
Welsh:
hollwybodusyn
— one who obnoxiously claims to be knowledgeable on a subject