nullius addictus jurare in verba magistri (L.), bound to swear to the words of no master, to follow no one blindly or slavishly.
nunc est bibendum (L.), now it is time to drink.
Obers (Ger.), cream.
obiit (L.), he, or she, died.
obiter (L.), by the way, cursorily;—obiter dictum, pl. obiter dicta, something said by the way, a cursory remark.
obscurum per obscurius (L.), [explaining] the obscure by means of the more obscure.
observanda (L.), things to be observed.
obsta principiis (L.), resist the first beginnings.
octroi (Fr.), duties paid at the gate of a city.
oderint dum metuant (L.), let them hate so long as they fear.