Crossword Genius

Did demonstrative act let guide cast off? (12)

Ross

I believe the answer is:

gesticulated

'did demonstrative act' is the definition.
(a gesture is an act demonstrating something)

'let guide cast off?' is the wordplay.
'off?' indicates anagramming the letters (I've seen 'off' mean this).
'let'+'guide'+'cast'='letguidecast'
'letguidecast' anagrammed gives 'GESTICULATED'.

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