high-hat

[hahy-hat]Informal.
adjective
  1. snobbish; disdainful; haughty.

Origin of high-hat

First recorded in 1915–20; v., adj. use of high hat
Related formshigh-hat·ter, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for high-hatter

high-hat

adjective
  1. informal snobbish and arrogant
verb -hats, -hatting or -hatted (tr)
  1. informal, mainly US and Canadian to treat in a snobbish or offhand way
noun
  1. informal a snobbish person
  2. two facing brass cymbals triggered by means of a foot pedal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012