Quick definitions from WordNet (hefty)
▸ adjective: of considerable weight and size ("A hefty dictionary")
▸ adjective: (of a person) possessing physical strength and weight; rugged and powerful ("A hefty athlete")
▸ adjective: large in amount or extent or degree ("Received a hefty bonus")
▸ name: A surname (very rare: popularity rank in the U.S.: #31861)
▸ Also see hefty
▸ adjective: of considerable weight and size ("A hefty dictionary")
▸ adjective: (of a person) possessing physical strength and weight; rugged and powerful ("A hefty athlete")
▸ adjective: large in amount or extent or degree ("Received a hefty bonus")
▸ name: A surname (very rare: popularity rank in the U.S.: #31861)
▸ Also see hefty