slip out vs sneak off

slip out and sneak off both are verbs.

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

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

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

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