UNSUBSTANTIAL Meaning of UNSUBSTANTIAL in English transcription, транскрипция: [ ˈʌnsəbˈstænʃəl ]adj. having little or no solidity, reality, or factual basis. øøunsubstantiality n. unsubstantially adv. English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012