Primus
First in time or importance
premier
situated behind or in the back
posterior
of a period before a war, especially the American Civil War
antebellum
a command; a rule of conduct
precept
member of the order of animals that includes monkeys and apes
primate
future generations
posterity
a thing or event that precedes
antecedent
the belief that what happens in human life has already been determined by some higher power
predestination
first in rank, excellence, quality, importance, or time
prime
occurring or continuing after death
posthumous
coming before in position or time
anterior
to take possession of something before someone else can do so
pre-empt
belonging to the first ages; ancient
primeval
ahead of the times, especially in the arts
avant-garde
absurd; contrary to nature or reason
preposterous
primeval; original; fundamental
primordial
the foremost position, especially of the army or fleet
vanguard
pretentious