Sunak on vacation? First sign of inflation, slide off (3)

I believe the answer is:

ski

I'm a little stuck... Click here to teach me more about this clue!

'slide off' is the definition.
'ski' can be an answer for 'slide' (skis slide over snow). I am unsure of the 'off' bit.

'sunak on vacation? first sign of inflation' is the wordplay.
'on vacation?' suggests removing the centre (I've seen 'on vacation' mean this).
'first sign of' suggests taking the first letters.
'sunak' with its centre taken out is 'sk'.
The first letter of 'inflation' is 'i'.
'sk'+'i'='SKI'

Can you help me to learn more?

(Other definitions for ski that I've seen before include "Engage in a winter sport" , "Sport on piste" , "Winter sport attachment" , "runner in winter" , "Descend fast" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.