sneaky vs furtive

sneaky and furtive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sneaky	No	Yes	No	No
furtive	No	Yes	No	No

As adjectives, sneaky and furtive are synonyms defined as:

sneaky and furtive: marked by quiet and caution and secrecy; taking pains to avoid being observed

Other synonyms of sneaky include sneak, stealthy, surreptitious.

sneaky (adjective)	furtive (adjective)
marked by quiet and caution and secrecy; taking pains to avoid being observed	marked by quiet and caution and secrecy; taking pains to avoid being observed
marked by deception	secret and sly or sordid