nursery transplant - one's orders
- on the strength
- on the strength of
- on the subject of
- on the supposition of something
- on the surface
- on the table
- on the tick
- on the tip of his tongue
- on the town
- on the understanding that
- on the up and up
- on the upgrade
- on the usual lines
- on the verge of
- on the view
- on the wallaby track
- on the wane
- on the water
- on the way
- on the way home
