Excited MP desires reforms (9)

I believe the answer is:

impressed

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'excited' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?

'mp desires reforms' is the wordplay.
'reforms' indicates anagramming the letters.
'mp'+'desires'='mpdesires'
'mpdesires' anagrammed gives 'IMPRESSED'.

Can you help me to learn more?

(Other definitions for impressed that I've seen before include "Stamped; moved" , "Markedly affected" , "Greatly inspired" , "Affected favourably" , "Favourably influenced" .)

I've seen this clue in The Telegraph.

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