Crossword Genius

Frank's love for a writer (4)

Ross

I believe the answer is:

open

'frank's' is the definition.
(synonyms)

'love for a writer' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'for' is a charade indicator (letters next to each other).
'a writer' becomes 'pen' (something which writes).
'o'+'pen'='OPEN'

(Other definitions for open that I've seen before include "Not closed; set going" , "Unrestricted; ready for business" , "Admitting customers" , "Undecided" , "Frank; unfold" .)

I've seen this clue in the Evening Standard.
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