Crossword Genius

Achievement by that woman is something insignificant (7)

Ross

I believe the answer is:

feather

'something insignificant' is the definition.
(feather can mean something unimportant)

'achievement by that woman' is the wordplay.
'achievement' becomes 'feat' (feat is a kind of achievement).
'by' is a charade indicator (letters next to each other).
'that woman' becomes 'her' (her refers to a woman).
'feat'+'her'='FEATHER'

'is' acts as a link.

(Other definitions for feather that I've seen before include "Part of a bird's plumage" , "English plume (de ma tante?)" , "Free hat (anag)" , "Prov. light part of bird" , "Rotate (propeller) blades (to reduce thrust)" .)

I've seen this clue in The Telegraph.
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