Indefinite years (4 letters)

{ Answer }

EONS

{ Related Clues }

Ages
Eternity
Ages and ages
Almost forever
Astronomical figures
Countless centuries
An eternity, seemingly
Immeasurable periods
Long stretches
Long times
Many ages
Many eras
Millions of years
Seemingly forever
Segments of eternity
Stretches of history
Time immemorial
Years on end
Years and years
Ages upon ages
Immense time spans
Incalculable amount of time
Just about forever
Long periods of time
Mind-boggling ages

{ Tags }

ages, almost, billions, centuries, end, eons, eras, eternity, forever, immemorial, long, many, millennia, millions, mind, periods, seemingly, time, times, upon, years

{ Notes }

The answer EONS is seen frequently, appearing about once every 70 puzzles.

{ Definition }

EON as a noun:

1. (eon, aeon) = the longest division of geological time

2. (eon, aeon) = an immeasurably long period of time; "oh, that happened eons ago"

3. (eon, aeon) = (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe