Below are possible answers for the crossword clue Many, many years.
4 letter answer(s) to many, many years
AGES
a late time of life; "old age is not for sissies"; "he's showing his years"; "age hasn't slowed him down at all"; "a beard white with eld"; "on the brink of geezerhood"
a prolonged period of time; "we've known each other for ages"; "I haven't been there for years and years"
a time of life (usually defined in years) at which some particular qualification or power arises; "she was now of school age"; "tall for his eld"
an era of history having some distinctive feature; "we live in a litigious age"
begin to seem older; get older; "The death of his wife caused him to age fast"
epoch/era
grow old or older; "She aged gracefully"; "we age every day--what a depressing thought!"; "Young men senesce"
how long something has existed; "it was replaced because of its age"
make older; "The death of his child aged him tremendously"
MATURE
3 letter answer(s) to many, many years
EON
(Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe
an immeasurably long period of time; "oh, that happened eons ago"
the longest division of geological time
Other crossword clues with similar answers to 'Many, many years'