Crossword Genius

With one movement, fluent about movie's completion (10)

Ross

I believe the answer is:

fulfilment

'completion' is the definition.
(fulfilment is a kind of completion)

'with one movement fluent about movie's' is the wordplay.
'with one movement' indicates an anagram (only one letter is moved).
'about' indicates putting letters inside.
'movie' becomes 'film' (synonyms).
'fluent' with letters rearranged gives 'fulent'.
'fulent' going around 'film' is 'FULFILMENT'.

I've seen this clue in The Guardian.
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