at that

at that  {adv. phr.},  {informal}
1. As it is; at that point; without more talk or waiting.
Ted was not quite satisfied with his haircut but let it go at that.
2. In addition; also.
Bill's seat mate on the plane was a girl and a pretty one at that.
3. After all; in spite of all; anyway.
The book was hard to understand, but at that Jack enjoyed it.
Categories: adverb informal