A long period of time that seems endless
The definition of a cycle is a period of time or complete set of events that repeat.
The length of time that a person or thing has existed:
(Countable) An experience.
A long time:
An indefinitely long period of time:
The third full moon in a three-month calendrical season that has four full moons.
A long time
Find another word for eon. In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for eon, like: eternity, cycle, age, period, aeon, era, time, long, year, blue moon and forever-and-a-day.