From Longman Dictionary of Contemporary Englishunforgivingun‧for‧giv‧ing /ˌʌnfəˈɡɪvɪŋ◂ $ -fər-/ adjective 1 FORGIVE#someone who is unforgiving does not forgive people easily2 an unforgiving place is very difficult to live in, for example because it is extremely hot or cold
Examples from the Corpus
unforgiving• The slalom kayak is fragile, uncomfortable and with unforgiving edges.• The unforgiving finger of fate always seemed to single out Frank Haffey but eventually the fall-guy had his day.• The building oozed a melancholy yet defiant air, cornered by an unforgiving landscape with which it refused to make any compromises.• Another will place philanthropy on a pedestal and yet have a resentful, unforgiving spirit.• In these hard and unforgiving times, some people have struggled as they've never had to before. 