unkinder , unkindest
If someone is unkind, they behave in an unpleasant, unfriendly, or slightly cruel way. You can also describe someone's words or actions as unkind.
All last summer he'd been unkind to her.
去年整个夏天他一直对她很不友好。
No one has an unkind word to say about him.
没有人说过他一句坏话。
If you describe something bad that happens to someone as unkind, you mean that they do not deserve it.
The weather was unkind to those pipers who played in the morning.
坏天气对上午那些风笛吹奏者十分不利。