SYN: Zenith, culmination, perfection, dawn, spring, cream, flower.
ANT: Decadence, wane, evening, refuse, winter, decay.
=
KEY: Prime \a.\
SYN: Excellent, superexcellent, first-rate, perfect, consummate.
ANT: Inferior, impaired, waning, deteriorated, ordinary, second-rate, defective.
=
KEY: Primeval.
SYN: Archaic, primordial, indigenous, autochthonic, aboriginal, pristine.
ANT: Subsequent, recent, modern, imported, adventitious.