HEFTY Meaning of HEFTY in English transcription, транскрипция: [ ˈheftɪ ]adj. (heftier, heftiest) 1 (of a person) big and strong. 2 (of a thing) large, heavy, powerful. øøheftily adv. heftiness n. English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012