What is the crossword answer for the clue: Certain agents

FEDS - a 4 letter word may be the answer you are looking for!

SPIES - a 5 letter word may be the answer you are looking for!

TMEN - a 4 letter word may be the answer you are looking for!

GMEN - a 4 letter word may be the answer you are looking for!

Certain agents

4 Character Answers:

FEDS

GMEN

TMEN

5 Character Answers:

SPIES