unlucky 1 antonyms and opposites of unlucky. Adjective — Having or bringing bad luck. Synonyms for unlucky hapless down on one's luck fortuneless ill-boding ill-fated ill-starred inauspicious infelicitous infortunate luckless misadventurous mischanceful misfortuned peak snakebit thwart unchancy unfavourable unfortunate unhappy unpropitious wanchancy Antonyms for unlucky lucky ← Back to the full definition of unlucky