In addition to the following idioms beginning with on one's
- on one's account
- on one's behalf
- on one's best behavior
- on one's doorstep
- on one's feet
- on one's feet
- on one's good behavior
- on one's guard
- on one's hands
- on one's head
- on one's heels
- on one's high horse
- on one's home ground
- on one's honor
- on one's last legs
- on one's mind
- on one's own
- on one's own account
- on one's own time
- on one's part
- on one's say-so
- on one's shoulders
- on one's soapbox
- on one's tail
- on one's toes
- on one's uppers
- on one's way