Convoluted exit raised by leader of Ukip in high places (8)

I believe the answer is:

tortuous

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'convoluted' is the definition.
('tortuous' can be a synonym of 'convoluted')

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(Other definitions for tortuous that I've seen before include "Winding, convoluted" , "Serpentine" , "involved" , "Full of twists and turns, devious" , "Full of twistings and windings" .)

I've seen this clue in The Telegraph.

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