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Related to at that: what have you
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.
because of what was said or done She called him a fool, and at that he stormed out of the room.
1. In addition, besides, as in The seats were good, and quite cheap at that. [First half of 1800s]
2. In spite of, nevertheless, as in Although I had to wait a long time for delivery, it was worth it at that. [Mid-1800s]
3. As it stands, without further changes, as in She wasn't happy with her grade in the course but decided to leave it at that. [Late 1800s]
1. In addition; besides: lived in one room, and a small room at that.
2. Regardless of what has been said or implied: a long shot, but she just might win at that.