Standard Lemma guide

know-all

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

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Someone who obnoxiously claims to be knowledgeable on a subject.

Definition source: English Wiktionary via Wiktextract

Usage: Ireland, UK

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Buddha, clever clogs, clever dick, know-all, know-it-all, smart aleck, smart ass, smarty, smarty pants, wiseacre, wiseass, wise-ass, wisenheimer

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-it-all

Antonyms: none provided

Broader terms: egotist, egoist, swellhead

History

Etymology

No etymology was provided for this word.

Real reading context

know-all in complete knowledge articles