Bootlicker to move slowly (5)

I believe the answer is:

creep

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

I cannot understand how the rest of the clue works.

(Other definitions for creep that I've seen before include "Move with stealth" , "Of plants, to grow along the ground" , "Move softly and slowly like slangy servile person" , "Fawn" , "Unpleasant person; develop slowly" .)

I've seen this clue in The Sun.

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