Crossword Genius

Conservatives in Scot’s better room cheer up (8)

Ross

I believe the answer is:

brighten

I'm a little stuck... Click here to teach me more about this clue!

'cheer up' is the definition.
(I've seen this before)

'conservatives in scot's better room' is the wordplay.
I cannot really understand how this works, but
'conservatives' could be 'right' (right-wing people) and 'right' is located in the answer.
'room' could be 'ben' (I have seen 'inner room' mean 'ben' so perhaps 'room' could also mean 'ben') and 'ben' is located in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for brighten that I've seen before include "Liven up" , "Polish" , "Illuminate, cheer up" , "Provide illuminations" , "Berthing (anag.)" .)

I've seen this clue in The Times.
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