noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Someone who obnoxiously claims to be knowledgeable on a subject. Ireland, UK
2. 2
   someone who thinks they know everything and refuses to accept advice or information from others wordnet

Synonyms

All synonyms

know-it-allbuddhaclever clogsclever dickeinsteinsmart aleck

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.