adjective (heftier; -est) Date: 1863 quite heavy, 2. marked by bigness, bulk, and usually strength , powerful , mighty , impressively large ; substantial , heftily adverb heftiness noun
HEFTY
Meaning of HEFTY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012