/ ˈhefti; NAmE / adjective ( heft·ier , hefti·est )
1.
( of a person or an object ) big and heavy :
Her brothers were both hefty men in their forties.
2.
( of an amount of money ) large; larger than usual or expected :
They sold it easily and made a hefty profit.
3.
using a lot of force :
He gave the door a hefty kick.
► heft·ily adverb
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WORD ORIGIN
mid 19th cent.: from heft lift or carry (something heavy) + -y .