(of a person) possessing physical strength and weight;
rugged and powerful; "a hefty athlete"; "a muscular boxer"; "powerful arms" Synonym(s):brawny, hefty, muscular, powerful, sinewy
of considerable weight and size; "a hefty dictionary"
large in amount or extent or degree; "it cost a considerable amount"; "a goodly amount"; "received a hefty bonus"; "a respectable sum"; "a tidy sum of money"; "a sizable fortune" Synonym(s):goodly, goodish, healthy, hefty, respectable, sizable, sizeable, tidy
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Hefty \Heft"y\, a.
Moderately heavy. [Colloq. U. S.]