381 Phrases Starting With Letter O

on a hiding to nothing

on a noble and commanding scale

on a review of the whole subject

on a wing and a prayer

on carey street

on cloud nine

on occasions of this kind

on queer street

on referring to your account we notice

on such a day as this

on sure ground of fact

on tenterhooks

on the ball

on the bubble

on the button

on the contrary, i agree with you thoroughly

on the contrary, i am assuming

on the dole

on the edge of great irritability

on the face of it, it sounds reasonable

on the fiddle

on the horns of a dilemma

on the occasion to which i refer

on the other hand, it is clear

on the pig's back

on the qt

on the shoulders of giants

on the wagon

on the warpath

on the whole, then, i observe