slip out vs sneak out

slip out and sneak out both are verbs.

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

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

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

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