Lower inside pressurised container (7)

I believe the answer is:

depress

'lower' is the definition.
(depressing is a kind of lowering)

'inside pressurised container' is the wordplay.
'container' says the answer is hidden in the clue.
'DEPRESS' can be found hidden inside 'inside pressurised'.

(Other definitions for depress that I've seen before include "Push, get, down" , "Sadden" , "Make dejected" , "Put dent in or make dismal" , "Push down or dispirit" .)

I've seen this clue in The Telegraph.

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