Crossword puzzle clue "who knows how long"

Here are the possible solutions for who knows how long clue

Answer
Clue
Relevancy
eon
Clue
Long long long long long long long time
Long, long, long time
Long, long, long time period
It is a long, long, long time
Definition
a long period of time, also AEON
evil
Clue
"Who knows what ___ lurks in the hearts of men? The Shadow knows!"
Definition
wickedness or depravity
laotse
Clue
Who wrote "He who knows others is wise; he who knows himself is enlightened"
pedant
Clue
He knows he knows
Definition
a person who parades or reveres excessively academic learning or technical knowledge
ages
Clue
Who-knows-how-long
Definition
AGE, to grow old

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