Crossword puzzle clue "like a spy's ink"

Here are the possible solutions for like a spy's ink clue

Answer
Clue
Relevancy
mad
Clue
Spot to spy "Spy vs. Spy"
"Spy vs. Spy" magazine
Humor magazine that features "Spy vs. Spy"
Definition
insane
invisible
Clue
Like a spy's ink?
Definition
that cannot be seen
alec
Clue
The spy in "The Spy Who Came In From the Cold"
Definition
a herring
antonio
Clue
Original "Spy vs. Spy" cartoonist Prohias
catandmousegame
Clue
Spy vs. spy, e.g.
cia
Clue
The spy organization in the 2015 movie "Spy": Abbr.

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