Synonyms of know-it-all

12 similar words · 1 opposite word

Another word for know-it-all is Buddha. Other synonyms of know-it-all are clever clogs, clever dick, know-all, smart aleck and smart ass.

Synonyms and similar words for know-it-all

BuddhaSynonym of know-it-all or smartass, a person who imagines themselves smarter or wiser than they are.
clever clogsSomebody who is rather too clever; a smart aleck; sometimes used as an epithet.
clever dick UKA person who annoyingly tries too hard to impress with their cleverness.
know-allSomeone who obnoxiously claims to be knowledgeable on a subject.
smart aleckOne who is pretentious about their own cleverness or knowledge.
smart assA person regarded with an obnoxiously determined advancement of one's own personality, wishes, or views.
smartyAn obnoxiously clever or quick-witted person.
smarty pantsA smart aleck or know-it-all.
wiseacreOne who feigns knowledge or cleverness; one who is wisecracking; an insolent upstart.
wiseassOne who makes wisecracks, particularly in a sassy or cocky fashion.
wise-ass
wisenheimer USA self-assertive and arrogant person; a wiseacre or smart aleck.

noun Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.

What is another word for know-it-all?: Know-it-all has 12 synonyms on Word.ws, such as Buddha, clever clogs, clever dick, know-all, smart aleck, smart ass, smarty and smarty pants.
What is the opposite of know-it-all?: The opposite of know-it-all is wise person.
What does know-it-all mean?: Know-it-all means someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.

Adapted from Wiktionary: know-it-all (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Synonyms of know-it-all.” Word.ws, https://word.ws/synonyms/know-it-all. Based on Wiktionary, CC BY-SA 4.0.