English poet who's liable to lash out? (7)

I believe the answer is:

spender

This clue is a double definition.

'english poet' is the first definition.
(Stephen Spender, 1909-1995)

'who's liable to lash out?' is the second definition.
(someone who spends money or lashes out)

(Other definitions for spender that I've seen before include "Waster" , "One who disburses money - big in popular song" , "One using money" , "patronising retailers, perhaps?" , "who is just 31[WINDOW SHOPPER]? No" .)

I've seen this clue in The Guardian.

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