Poles lost inclination (5)

I believe the answer is:

slope

'inclination' is the definition.
(slope is a kind of inclination)

'poles lost' is the wordplay.
'lost' indicates an anagram.
'poles' with letters rearranged gives 'SLOPE'.

(Other definitions for slope that I've seen before include "Inclination" , "Tilt with poles" , "Be inclined" , "Gradient, incline" , "decamp" .)

I've seen this clue in The Mirror.

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