Crossword Genius

Tolerate hairstyle — one time! (6)

Ross

I believe the answer is:

permit

'tolerate' is the definition.
(I know that tolerate can be written as permit)

'hairstyle one time' is the wordplay.
'hairstyle' becomes 'perm' (perm is a hairstyle).
'one' becomes 'I' (Roman numeral).
'time' becomes 't' (abbreviation).
'perm'+'i'+'t'='PERMIT'

(Other definitions for permit that I've seen before include "Let - pass" , "Allow - visa" , "Warrant" , "Allow, authorise" , "Licence -- license" .)

I've seen this clue in The Times.
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