"Snakes in boots" is a phrase often used to describe the feeling of unease or danger lurking in a seemingly safe environment. When searching for synonyms for this phrase, some options include "hidden threats," "deceptive danger," or "masked peril." Another option could be to describe the feeling, such as "uneasy sensation," "unsettling presence," or " looming danger." The phrase could also be expanded to include other forms of danger, such as "monsters in disguise" or "wolves in sheep's clothing." Ultimately, the phrase "snakes in boots" remains a popular and effective way to express a sense of hidden danger.