ultimate
surpassing all others; definitive
penultimate
just before the final; next-to-last
ultimatum
a demand or threat that is final
infinite
without beginning or end
definitive
defining for all others; standard
infinitesimal
extremely small; incalculably or immeasurably small
novel
new and different
novice
an inexperienced person; an amateur
innovative
showing creativity and originality
primal
original; dating from the beginning of existence
primeval
extremely ancient; of earliest time
primacy
the condition of being first in time or importance