at that

English

(idiomatic) In addition to what has been said; furthermore; moreover.
He went to a famous school, and a good one at that.
- 1964 September, “New Books: A History of Russian Railways. By J. N. Westwood. Allen & Unwin. 45s.”, in Modern Railways, page 222:
  One would have expected something more perfected from a don—and a lecturer at McGill at that.
(idiomatic) Now that it has been mentioned.
- 2004, Susan Volland, Love and Meatballs, page 62:
  "Someone needs to get these naive kids up to speed on what goes on in the real world." I spoon-fed him some more sugar. "And it sounds like you're just the man to do it."
  "Maybe I am. Maybe I am at that."
(idiomatic) Thereupon; directly after, and as a result of, that.
- 2012, Andrew Lang, King Arthur: Tales from the Round Table:
  […] he heard the birds sing, and at that he felt comforted.

in addition