They, in general, include observing (5)

I believe the answer is:

eying

'observing' is the definition.
(I've seen this in another clue)

'they in general include' is the wordplay.
'include' indicates a hidden word.
'EYING' can be found hidden inside 'they in general'.

(Other definitions for eying that I've seen before include "Looking at with interest" , "Observing" , "Ogling," , "Looking at closely" , "Watching closely" .)

I've seen this clue in The Daily Express.

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