Make a ropy descent (6)

I believe the answer is:

abseil

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'make a ropy descent' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for abseil that I've seen before include "Descend rock-face using a doubled rope - like Isabel" , "let oneself down" , "come down quickly" , "Use a rope to climb down a mountain" , "Go down by rope" .)

I've seen this clue in the Evening Standard.

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