Don't be cruel to a heart that's true.
Here are some sentences.It is cruel to make fun of someone.Don't be cruel to her.
The tyrant wasn't as cruel as his predecessors.
Do not be cruel to animals.Why are you so cruel to me?Her actions were very cruel.
Why are you so cruel to me?That was a very cruel thing to do.
"Can you use cruel in a sentence?" is a sentence, so yes, unless you mean something else?
Genghis Khan was notoriously cruel.
Being cruel is not an innate condition.
give example of oxymoron using cruel to be kind
Don't be cruel to a heart that's true.
No, a better way to reword that sentence would be to say: It is barbaric and cruel to intentionally cause excruciating pain to animals.
you are as cruel as a tiger
Cruella DeVille was very cruel in her handling of the Dalmatian pups.