Meaning of “cruel” - Learner’s Dictionary

cruel

adjective us uk /ˈkruːəl/ crueller, cruellest, crueler, cruelest

B1 extremely unkind, or causing people or animals to suffer:

a cruel joke
Many people think hunting is cruel to animals.

More examples

cruelly adverb

(Definition of “cruel” from the Cambridge Learner’s Dictionary © Cambridge University Press)