Leave fair, out of sorts (5,3)

I believe the answer is:

clear off

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

'fair out of sorts' is the wordplay.
'fair' becomes 'clear' (I've seen this before).
'out of sorts' becomes 'off' (both can mean ill or unusual).
'clear'+'off'='CLEAR OFF'

(Other definitions for clear off that I've seen before include "Go away - transparently" , "Leave" , "Skedaddle" , "Get lost!" , "Begone (colloq.)" .)

I've seen this clue in The Guardian.

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