Early
Part of speech: adjective
Definition: At a time in advance of the usual or expected event. Arriving a time before expected; sooner than on-time. Near the start or beginning.
Part of speech: adverb
Definition: At a time before expected; sooner than usual.
Example sentence: Let no one be slow to seek wisdom when he is young nor weary in the search of it when he has grown old. For no age is too early or too late for the health of the soul.
Primaeval
Part of speech: adjective
Definition: Belonging to the first ages