[on the ropes] {adv.} or {adj. phr.} 1. Against the ropes […]

[on the run] {adv.} or {adj. phr.} 1. In a hurry; […]

[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 up and up] {adj. phr.}, {informal} Honest; trustworthy; sincere. […]

[on the warpath] {adj. phr.}, {informal} 1. Very angry. * /When […]

[on the watch] {adj. phr.} Alert; watchful. * /The customs inspector […]

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