[on the string] or [on a string] {adv. phr.}, {informal} Under […]

[on the take] {adv. phr.} Bribable; corrupt. * /Officer O'Keefe was […]

[on the tip of one's tongue] {adv. phr.} About to say […]

[on the wagon] {adv. phr.} Participating in an alcohol addiction program; […]

[on the wane and on the wax] {adv. phr.} Decreasing and […]

[on the whole] {adv. phr.} 1. In the most important things; […]

[on the wrong track] {adv. phr.} Lost; pursuing the wrong lead. […]

[once and for all] {adv. phr.} 1. One time and never […]

[once in a blue moon] {adv. phr.} Very rarely; very seldom; […]

[once in a while] {adv. phr.} Not often; not regularly; sometimes; […]