[on one's head] or [upon one's head] {adv. phr.} On one's […]

[on one's mind] {adv. phr.} In one's thoughts. * /I'm glad […]

[on one's own account] or {informal} [on one's own hook] {adv. […]

[on one's own time] {adv. phr.} During one's free time; not […]

[on one's shoulders] {adv.} or {adj. phr.} In your care; as […]

[on paper] {adv.} or {adj. phr.} Judging by appearances only and […]

[on purpose] {adv. phr.} For a reason; because you want to; […]

[on schedule] (1) {adv. phr.} As planned or expected; at the […]

[on the air] {adj.} or {adv. phr.} Broadcasting or being broadcast […]

[on the beam] {adv.} or {adj. phr.} 1. (Of an airplane) […]