I wish you hadn't invited Joan. I can't stand her. - Don't be unkind! She hasn't done anything to you.Me molesta que hayas invitado a Joan. No la aguanto. - ¡No seas antipático! No te ha hecho nada.
You musn't be unkind to your little sister. She sometimes doesn't understand things.No debes ser malo con tu hermanita. A veces hay cosas que no entiende.
that was very unkind of himeso fue muy poco amable de su parte;I've never known him to be unkindnunca ha sido desagradable, que yo sepa;she never has an unkind word to say about anyonenunca dice nada malo de nadie
he was making unkind remarks about her weighthe was unkind enough to...she could be rather unkind at times
it would be unkind to say that ...sería cruel decir que ...;to be unkind to sbportarse mal con algn
2[+climate]riguroso
the weather was unkind to usel tiempo nos jugó una mala pasada