Enter a clue or pattern or both:
The Clue
Time ___ (eons) (10 letter answer)
The Answer
IMMEMORIAL
Tags
Notes
The answer IMMEMORIAL is so rare that it appears less than once every 2500 puzzles.
Definition
IMMEMORIAL as an adjective:
1. long past; beyond the limits of memory or tradition or recorded history; "time immemorial"