adjective, heft·i·er, heft·i·est.

heavy; weighty: a hefty book.
big and strong; powerful; muscular: a hefty athlete.
impressively large or substantial: a hefty increase in salary.

Origin of hefty

First recorded in 1865–70; heft + -y1
Related formsheft·i·ly, adverbheft·i·ness, noun

Synonyms for hefty

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for hefty


adjective heftier or heftiest informal

big and strong
characterized by vigour or forcea hefty blow
large, bulky, or heavy
sizable; involving a large amount of moneya hefty bill; a hefty wage
Derived Formsheftily, adverbheftiness, 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 hefty

1867, from heft + -y (2). Related: Heftiness.

Online Etymology Dictionary, © 2010 Douglas Harper