Crossword puzzle clue "secret as an investigation"

Here are the possible solutions for secret as an investigation clue

Answer
Clue
Relevancy
undercover
Clue
Secret, as an investigation
fried
Clue
1991 film with the tagline "The secret of life? The secret's in the sauce"
Definition
FRY, to cook in fat or oil
igpayatinlay
Clue
Secret code, in the secret code
lingerie
Clue
Victoria's not-so-secret secret
Definition
(French) women's underwear
out
Clue
Like a secret that's no longer secret
Definition
to reveal
piglatin
Clue
Not-so-secret secret language
ritual
Clue
Secret society's secret
abscam
Clue
1978-80 F.B.I. investigation

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