at that

1. Additionally; as well; on top of that. Used at the end of a sentence to emphasize the remark.

The movie was boring, and it was over three hours long at that.

Don’t be so hard on yourself; you are intelligent, funny, and kind at that!

2. Irrespective of what has just been said, implied, or assumed; nonetheless; notwithstanding. Used at the end of a sentence to emphasize the remark.

The defending champion is widely expected to remain undefeated; however, this new challenger might be able to pull out a victory at that.

He has a bad reputation, but he’s actually very kind at that.