Collocations for harsh - adj.

appear, be, prove, seem, sound
It may seem harsh to criticize him after his death.

become

extremely, fairly, very, etc.
exceptionally, particularly
increasingly
a little, slightly, etc.
overly, unduly, unnecessarily
He accused her of being unduly harsh.

surprisingly

Harsh is used with these nouns:
bark, climate, condemnation, condition, critic, criticism, discipline, environment, fact, glare, judgement, language, laugh, law, light, lighting, measure, penalty, punishment, reality, rebuke, regime, reminder, repression, restriction, rule, sentence, spotlight, sun, sunlight, terrain, tone, treatment, truth, voice, weather, whisper, wind, winter, word