We don't have synonyms for sneak off yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are seal off, swear off and break off.
(n) :
a mean, sneaking fellow; , A ball bowled so as to roll along the ground; a daisy-cutter
(v) :
to creep or steal (away or about) privately; to come or go meanly, as a person afraid or ashamed to be seen; as, to sneak away from company; to hide, especially in a mean or cowardly manner
(n) :
a mean, sneaking fellow; , A ball bowled so as to roll along the ground; a daisy-cutter
(v) :
to creep or steal (away or about) privately; to come or go meanly, as a person afraid or ashamed to be seen; as, to sneak away from company; to hide, especially in a mean or cowardly manner