In the 1960's people were very cruel to blacks,
The citizens were oppressed by their cruel dictator.
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?
Infidelity is rampant among the selfish, cruel leaders.
Being cruel is not an innate condition.
you are as cruel as a tiger
Here are some sentences.It is cruel to make fun of someone.Don't be cruel to her.
This seems a very cruel fate for an innocent, harmless sheet of paper.
Example sentence - She would have readily have forgiven him but he continued to be cruel so she left him.
Oxymoron is the word you are looking for.Example:'He looked at her with cruel kindness'.The expression 'cruel kindness' is an oxymoronbringing out a self-contradictory effect in the sentence.
The jocks at school are cruel to the nerds.My brother is cruel to me because I beat him at video games.
Do not be cruel to animals.Why are you so cruel to me?Her actions were very cruel.