1. (used colloquially) overly conceited or arrogant
   - bigheaded, persnickety, snooty, snot-nosed, snotty, stuck-up, too big for one's breeches

See also: proud, uppishly, uppishness

• unsubduable
• unsubdued
• unsubmissive
• unsubscribe
• unsubstantial
• unsubstantialise
• unsubstantialize
• unsubstantiated
• unsubtle
• unsuccessful
• unsuccessful person
• unsuccessfully
• unsufferable
• unsugared
• unsuitability
• unsuitable
• unsuitableness
• unsuitably
• unsuited
• unsullied
• unsung
• unsupervised
• unsupportable
• unsupported
• unsupportive