Tops of Italian mountains behind us, extremely steep (5)

I believe the answer is:

imbue

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

'tops of italian mountains behind us extremely' is the wordplay.
'tops of' says to take the initial letters.
The first letters of 'italian mountains behind us extremely' is 'IMBUE'.

(Other definitions for imbue that I've seen before include "Charge" , "Permeate, pervade" , "Fill with a feeling or quality" , "Fill (with a particular feeling)" , "Penetrate" .)

I've seen this clue in The Times.

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