Crossword Genius

Somehow elm is so willowy? (7)

Ross

I believe the answer is:

lissome

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

'somehow elm is so' is the wordplay.
'somehow' indicates anagramming the letters.
'elm'+'is'+'so'='elmisso'
'elmisso' is an anagram of 'LISSOME'.

(Other definitions for lissome that I've seen before include "Oil mess (anag)" , "Lithe; nimble" , "flexible" , "Slim, supple, graceful" , "So smile, being agile and lithe" .)

I've seen this clue in The Sun.
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