How stuck-up a fool can be! (5)

I believe the answer is:

aloof

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'how stuck-up' is the definition.
I can't judge whether this definition defines the answer.

'a fool can be' is the wordplay.
'can be' indicates anagramming the letters.
'fool' with letters rearranged gives 'loof'.
'a'+'loof'='ALOOF'

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(Other definitions for aloof that I've seen before include "Snooty" , "Showing detached attitude" , "Cool, distant" , "reserved" , "Coldly distant" .)

I've seen this clue in the Evening Standard.

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