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adjective, heft·i·er, heft·i·est.
  1. heavy; weighty: a hefty book.
  2. big and strong; powerful; muscular: a hefty athlete.
  3. impressively large or substantial: a hefty increase in salary.
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Origin of hefty

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

Synonyms for hefty

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for hefty

heavy, tremendous, fat, large, sizable, substantial, massive, robust, colossal, weighty, ample, awkward, beefy, brawny, burly, cumbersome, extensive, forceful, hulking, husky

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British Dictionary definitions for hefty


adjective heftier or heftiest informal
  1. big and strong
  2. characterized by vigour or forcea hefty blow
  3. large, bulky, or heavy
  4. sizable; involving a large amount of moneya hefty bill; a hefty wage
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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.

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Online Etymology Dictionary, © 2010 Douglas Harper