Clear to detect the lies (3-7)

I believe the answer is:

see-through

This clue is a double definition.

'clear' is the first definition.
(thesaurus)

'detect the lies' is the second definition.

'to' acts as a link.

(Other definitions for see-through that I've seen before include "Transparent" , "Translucent" .)

I've seen this clue in The Guardian.

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