At last
Finally, after a long time. I waited all morning for my friend's call until at last it came.
At large
To be free, to not be captured. The criminal was at large for many months.
At it again
To be doing something again. The two boys were at it again. We could hear them fighting.
At home
In one's house. I left my money at home so i had to borrow some.
At heart
Basically, fundamentally. The woman is a nice person at heart although many people dislike her.
At hand
Within reach, nearby. I stopped working because i did not have any tools at hand.
At first blush
When first seen, without careful study. At first blush the man seemed like a good worker but later he had many problems.
At first
At the beginning. At first, I didn't want to go to the movie but i later changed my mind.
At fault
To be responsible for something, to be to blame for something. The truck driver was at fault for the terrible accident.
At face value
The apparent value of something, the value that is printed on a stamp or a bond. At face value the old stamp was worth almost nothing.