Fairground slide (6-7)

I believe the answer is:

helter-skelter

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

This is all the clue.

(Other definitions for helter-skelter that I've seen before include "Pell-mell" , ""Amusement" ride - in a confused hurry" , "High spiral slide at fairground" , "Slapdash - fairground ride" , "Fairground attraction" .)

I've seen this clue in The Independent, The Telegraph and The Times.

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