[on the lookout] {adj. phr.} Watching closely. * /The little boy […]

[on the loose] {adj. phr.}, {informal} Free to go; not shut […]

[on the make] {adj.}, {slang} 1. Promiscuous or aggressive in one's […]

[on the market] {adj. phr.} For sale. * /In the summer […]

[on the mend] {adj. phr.} Healing; becoming better. * /John's broken […]

[on the move] {adj.} or {adv. phr.} 1. Moving around from […]

[on the outs] {adj. phr.}, {informal} Not friendly; having a quarrel. […]

[on the piss] {adj.} Getting drunk, drinking alcohol.

[on the road] {adv.} or {adj. phr.} 1. Traveling; moving from […]

[on the rocks] {adj. phr.} 1. {informal} Wrecked or ruined. * […]