Here are the possible solutions for one with many years ahead of him clue
Answer
Clue
Relevancy
prisoner
Clue
One with many years ahead of him
Definition
one that is imprisoned
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
ages
Clue
Years and years and years
Definition
AGE, to grow old
eon
Clue
Years and years and years
Definition
a long period of time, also AEON
eons
Clue
Years and years and years
Definition
EON, a long period of time, also AEON
anni
Clue
Years, many years ago
Years many years ago
adams
Clue
The only U.S. president whose vice president ran against him to succeed him was John ....