- atoned
- at one fell swoop
- at one go
- atonement
- atones
- At one time
- at one time or another
- at one with
- atoning
- at/on someone's suggestion
- at/on the cutting edge of
- at/on the scene
- atop
- a touch
- a touch of
- a tough act to follow
- a tough/hard nut to crack
- a tough/hard row to hoe
- a tough nut
- a tough nut to crack
- a tough nut (to crack)
- a tough row to hoe
- at peace
- at peace with
- at play