Has to dishearten Tony, quick! (5)

I believe the answer is:

hasty

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

'has to dishearten tony' is the wordplay.
'to dishearten' suggests removing the centre.
'tony' with its centre removed is 'ty'.
'has'+'ty'='HASTY'

(Other definitions for hasty that I've seen before include "Impulsive" , "Hurried; without thinking" , "Precipitous" , "Too hurried, careless" , "Quick but ill-considered" .)

I've seen this clue in the Evening Standard.

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