surreptitious vs furtive

surreptitious and furtive both are adjectives.

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

As adjectives, surreptitious and furtive are synonyms defined as:

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

Other synonyms of surreptitious include sneak, sneaky, stealthy.

surreptitious (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
conducted with or marked by hidden aims or methods	secret and sly or sordid