The word "lurk" means to stay hidden or unseen while observing something or someone without actively participating or making oneself known. Full definition
Just as you must be vigilant about dangers lurking in common household items for your two - legged toddlers, so too must you watch out for dangers to your fur babies. (onpets.com)
As an added bonus, you probably have most of these ingredients lurking around in your pantry and fridge already! (doughseedough.net)
But there is still a sense of something lurking behind the face. (filmcomment.com)