unluckyPronunciation: /ʌnˈlʌki/Translate unlucky | into French | into German | into Italian | into Spanish Definition of unlucky adjective (unluckier, unluckiest) having, bringing, or resulting from bad luck:an unlucky defeat [with infinitive]:the visitors were unlucky to have a goal disallowedDerivatives unluckily adverb unluckiness noun unlucky in other Oxford dictionaries Definition of unlucky in the US English dictionary