cruel

adjective

Wilfully causing pain or suffering to others, or feeling no concern about it.

verb

Spoil or ruin (an opportunity or a chance of success).

SYNONYMS

abominableatrociousbarbaricbarbarousbeastlybloodlessbloodthirstybrutalbrutishcallouscold-bloodedcold-heartedcut-throatdastardlydevilishdiabolicaldraconianevilferociousfiendishfierceflintyghastlyhard-heartedharshheartlessheinoushideoushomicidalinclementinhumaninhumanemeanmercilessmonstrousmurderousnastypitilessremorselessruthlesssadisticsanguinarysavageseverespitefulsternstony-hearteduncaringuncharitableunemotionalunfeelingunkindunmercifulunrelentingunsparingunsympatheticviciousvilewicked