Is bound to dishearten Tony, being rash (5)

I believe the answer is:

hasty

I'm a little stuck... Click here to teach me more about this clue!

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

'is bound to dishearten tony' is the wordplay.
'is bound to' becomes 'has' (I can't justify this - if you can you should believe this answer much more).
'dishearten' suggests removing the centre.
'tony' with its middle removed is 'ty'.
'has'+'ty'='HASTY'

Can you help me to learn more?

(Other definitions for hasty that I've seen before include "Speedy" , "Rash; hurried" , "Quick but ill-considered" , "Impulsive" , "Impetuous - quick-tempered" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.