nursery transplant - one's orders
- on a point of order
- on a shoestring
- on a small scale
- on a string
- on a sudden
- on a war footing
- on a worldwide scale
- on account
- on account of
- on again off again
- on air
- on air presentation
- on all fours
- on all hands
- on alternate days
- on an average
- on an empty stomach
- on an equal footing
- on an equality with
- on an even keel
