Know-it-all

Quick meaning: Know-it-all is a noun meaning (chiefly US, derogatory) Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.

Meaning

(chiefly US, derogatory) Someone who claims to be knowledgeable or an expert in something, obnoxiously dismissing the opinions, advice, suggestions, etc. of others.

Example Sentences

She's a mean, bossy know-it-all.

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.

Have you ever gone shopping with a Know-It-All girlfriend and she insists, without your consent or consulting you first, to choose your outfits for you?

The same holds true for supporting details—they help you to learn more about a topic. Be a know it all by sharing these details and supporting details with friends.

Word Forms

• know-all

Synonyms for know-it-all

Depending on context, synonyms include Buddha, know-all, smart aleck, smart ass, smarty, wiseacre.

Related Words

Related dictionary entries include know-all, know-everything, smartass, smart aleck, blowhard, wiseacre.

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