[on the shelf] {adv.} or {adj. phr.}, {informal} Laid aside; not […]

[on the spot] {adv.} or {adj. phr.} 1. or [upon the […]

[on the stage] {adv.} or {adj. phr.} In or into the […]

[on the town] {adv.} or {adj. phr.}, {informal} In or into […]

[on the way] or [on one's way] {adv.} or {adj. phr.} […]

[on the wing] {adv.} or {adj. phr.} 1. In the air; […]

[on time] {adv.} or {adj. phr.} 1. At the time arranged; […]

[on top] {adv.} or {adj. phr.}, {informal} In the lead; with […]

[on trial] {adv.} or {adj. phr.} 1. For testing or trying […]

[or other] {adv.} - Used to emphasize indefinite words or phrases […]