underdress

[ verb uhn-der-dres; noun uhn-der-dres ]
/ verb ˌʌn dərˈdrɛs; noun ˈʌn dərˌdrɛs /

verb (used without object), un·der·dressed or un·der·drest, un·der·dress·ing.

to clothe oneself less completely or formally than is usual or fitting for the circumstances.

noun

garments worn beneath others; underclothes.
a slip, petticoat, or other underskirt, especially one designed to be seen when worn, as beneath a redingote.

Origin of underdress

First recorded in 1775–85; under- + dress
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for underdressed

British Dictionary definitions for underdressed

underdressed
/ (ˌʌndəˈdrɛst) /

adjective

wearing clothes that are not elaborate or formal enough for a particular occasion
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