Impelled to depress assembly (7)

I believe the answer is:

pressed

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'impelled' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'depress assembly' is the wordplay.
'assembly' is an anagram indicator.
'depress' is an anagram of 'PRESSED'.

'to' acts as a link.

Can you help me to learn more?

(Other definitions for pressed that I've seen before include "Coerced" , "in a big hurry" , "under some strain" , "Argued strongly and exerted force" , "Ironed" .)

I've seen this clue in The Mirror.

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