Go furtively (5)
(Other definitions for creep that I've seen before include "Move slowly with body close to ground" , "Slink" , "Fawn" , "Steal" , "Crawl; skulk" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">go furtively</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Another definition for slink that I've seen is " Hide".)