Definition: Contending(s) is a verb in English which means to be at odds or disputing over something, especially if one side is determined to do so.
For example:
I've been trying to make peace with my boss about the disagreement we had about the work assignment, but he seems to have contended it all the time and hasn't listened to me.
I'm not happy because we've been arguing over who should get the promotion, but I'm also considering negotiating a compromise that might help us both feel better.