adjective, sweat·i·er, sweat·i·est.

covered, moist, or stained with sweat.
causing sweat.

Origin of sweaty

First recorded in 1325–75, sweaty is from the Middle English word swety. See sweat, -y1
Related formssweat·i·ly, adverbsweat·i·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sweaty

British Dictionary definitions for sweaty


adjective sweatier or sweatiest

covered with sweat; sweating
smelling of or like sweat
causing sweat
Derived Formssweatily, adverbsweatiness, noun
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

Word Origin and History for sweaty

late 14c., from sweat + -y (2). Related: Sweatiness.

Online Etymology Dictionary, © 2010 Douglas Harper