hefty

UK: /ˈhɛfti/ US: /ˈhɛfti/ ,(hef′tē)

Inflections of 'hefty' (adj):

heftier

adj comparative

heftiest

adj superlative

WordReference Random House Learner's Dictionary of American English © 2026

heft•y /ˈhɛfti/   adj., -i•er, -i•est. 

1. heavy;
   weighty:
   a hefty dictionary.
2. mighty;
   powerful:
   a hefty line of football players.
3. large;
   substantial:
   a hefty increase in salary.

heft•i•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

heft•y  (hef′tē), adj., 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.

• heft + -y¹ 1865–70

heft′i•ly, adv. 
heft′i•ness, n. 
Synonyms

• 2. . robust, husky, burly, stalwart.

Collins Concise English Dictionary © HarperCollins Publishers::

hefty / ˈhɛftɪ/ adjective (heftier, heftiest)

1. big and strong
2. characterized by vigour or force: a hefty blow
3. large, bulky, or heavy
4. sizable; involving a large amount of money: a hefty bill, a hefty wage

ˈheftily adverb

ˈheftiness noun