Crossword Genius

Excellent suggestion might finally work (6)

Ross

I believe the answer is:

tiptop

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

'suggestion might finally work' is the wordplay.
'suggestion' becomes 'tip' (tip is a kind of suggestion).
'finally' indicates one should take the final letters.
'work' becomes 'op' (abbreviation for opus).
The last letter of 'might' is 't'.
'tip'+'t'+'op'='TIPTOP'

(Other definitions for tiptop that I've seen before include "Jolly good, excellent" , "Very fine" , "Best of its kind" , "First-rate" , "Excellent, super" .)

I've seen this clue in The Independent.
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