Crossword Genius

Undoing of a dolt! (3)

Ross

I believe the answer is:

oaf

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

'undoing of a' is the wordplay.
'undoing' indicates an anagram.
'of'+'a'='ofa'
'ofa' with letters rearranged gives 'OAF'.

(Other definitions for oaf that I've seen before include "Clod" , "Yahoo" , "Clumsy fool" , "buffoon" , "A clumsy boor" .)

I've seen this clue in the Evening Standard.
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