prīnceps, cipis [prīmus + capio], adj., first, foremost; as subst. m., leading man, chief, leader.
prīncipātus, ūs [prīnceps], m., a chief authority (in the state); headship, leadership; reign, sovereignty.
prīncipium, ī [prīnceps], n., beginning, origin.
prior, us, gen. priōris, comp. adj., former, previous, first, prior; sup. prīmus, first, foremost.
prīscus, a, um [prius], adj., former, elder; primitive, strict.
Prīscus, ī, m., see Tarquinius.
prīstinus, a, um [prius], adj., former, old.
prius [prior], adv., before, sooner, previously, first of all.
prīvātim [prīvātus], adv., privately, as a single individual.