Hidden clue here will be! (7)

I believe the answer is:

cryptic

I'm a little stuck... Click here to teach me more about this clue!

'hidden' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for cryptic that I've seen before include "Enigmatic" , "Esoteric" , "Concealing meaning in puzzling way as Crosaire does" , "(Of crossword) withindirect clues" , "Hidden" .)

I've seen this clue in The Sun.

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