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swellhead

American  
[swel-hed] / ˈswɛlˌhɛd /

noun

  1. a vain or arrogant person.

Other Word Forms

  • swellheaded adjective
  • swellheadedness noun

Etymology

Origin of swellhead

An Americanism dating back to 1835–45; swell + head

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.