Doubt one may be apprehended (7)

I believe the answer is:

suspect

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'doubt' is the definition.
(synonyms)

I cannot understand how the remainder of the clue works.

(Other definitions for suspect that I've seen before include "Imagine to be true" , "One believed to have committed a crime" , "Be ready to believe - one of the usual crowd?" , "Have qualms about" , "one on bail, perhaps" .)

I've seen this clue in The Sun.

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