UNTHRIFTY Meaning of UNTHRIFTY in English transcription, транскрипция: [ ˈʌnˈθrɪftɪ ]adj. 1 wasteful, extravagant, prodigal. 2 not thriving or flourishing. øøunthriftily adv. unthriftiness n. English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012