Crossword Genius

Numb, thrash wastrel (8)

Ross

I believe the answer is:

deadbeat

'wastrel' is the definition.
(both can mean a lazy or good-for-nothing person)

'numb thrash' is the wordplay.
'numb' becomes 'dead' (eg a dead arm).
'thrash' becomes 'beat' (synonyms).
'dead'+'beat'='DEADBEAT'

(Other definitions for deadbeat that I've seen before include "idler" , "Lazy, useless person" , "Exhausted - layabout" , "extremely tired" , "idle so-and-so" .)

I've seen this clue in The Times.
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