/ ˌɪnhjuːˈmeɪn; NAmE / adjective
not caring about the suffering of other people; very cruel
SYN callous :
inhumane treatment of animals / prisoners
OPP humane
► in·hu·mane·ly adverb
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WORD ORIGIN
late Middle English (in the sense inhuman, brutal ): originally a variant of inhuman (rare after 1700); in modern use from in- not + humane (the current sense dating from the early 19th cent.).