Funny girl about to finish work (4)

I believe the answer is:

joky

'funny' is the definition.
(thesaurus)

'girl about to finish work' is the wordplay.
'girl' becomes 'joy' (girl's name).
'about' is an insertion indicator.
'to finish' suggests the final letters.
The final letter of 'work' is 'k'.
'joy' going around 'k' is 'JOKY'.

(Another definition for joky that I've seen is " playful".)

I've seen this clue in the Evening Standard.

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