Slive is from a dialectal English verb, probably from Old English (to)slifan ('to split, cleave'), related to sliver and sleeve. The historical chain includes Old English slifan. Older glosses in the chain include "to split, cleave", which help explain the semantic range of the modern word. Morphologically, slive is best read as borrowing, yielding an English verb shaped by both form history and later usage. In current English it functions as a verb, with the sense "to slip or sneak about slyly (dialectal)". related forms include sliver and sleeve. The result is an English verb whose etymology preserves the older forms while supporting the word's specialized modern meaning.