Crossword Genius

Letter spelled out work in detail (6)

Ross

I believe the answer is:

deeply

'in detail' is the definition.
(eg reading deeply on a topic)

'letter spelled out work' is the wordplay.
'letter spelled out' becomes 'dee' (the spelled-out name for the letter D).
'work' becomes 'ply' (I've seen this before).
'dee'+'ply'='DEEPLY'

(Other definitions for deeply that I've seen before include "With intense feeling", "Profoundly", "fathoms down?", "Thoroughly", "In a profound way".)

I've seen this clue in The Times.
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