Sneak (5)
'sneak' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for telltale that I've seen before include "Person revealing secrets" , "Blabbermouth, snitch" , "Blabber-mouth, can't keep a secret" , "Revealing indicator or sneak" , "One revealing secrets" .)
'sneak' is the definition.
(synonyms)
This is all the clue.
(Other definitions for creep that I've seen before include "Move slowly with body close to ground" , "Crawl; skulk" , "Tiptoe" , "Unpleasant person; develop slowly" , "Move with stealth" .)
'sneak' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lurk that I've seen before include "Behave in a sneaky and secretive manner" , "Wait furtively" , "View an online forum without contributing" , "Lie in ambush" , "keep low profile" .)