sneak off vs slip out

sneak off and slip out both are verbs.

Word	Noun	Adjective	Verb	Adverb
sneak off	No	No	Yes	No
slip out	No	No	Yes	No

As verbs, sneak off and slip out are synonyms defined as:

Other synonyms of sneak off include slip away, sneak away, sneak out, steal away.

sneak off (verb)	slip out (verb)
leave furtively and stealthily	leave furtively and stealthily