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.
双语例句
例: All last summer he'd been unkind to her.
去年整个夏天他一直对她很不友好。
例: No one has an unkind word to say about him.
没有人说过他一句坏话。