Orator fit, poeta nascitur.—The orator is made by education, but a poet must be born.

Ore rotundo.—With full-sounding voice.

Otium cum dignitate.—Dignified leisure.

Outré.—Preposterous; eccentric.

Oyer and Terminer.—A criminal court.

Pallida mors.—Pale death.

Par excellence.—By way of eminence.

Par nobile fratrum.—A noble pair of brothers; two just alike.

Pari passu.—With equal step; in the same degree.