snub v.

mid-14c., "to check, reprove, rebuke," from Old Norse snubba, Old Danish snebbe, "to curse, chide, snub, scold, reprove." The etymological sense is perhaps "to cut off," and the word probably is related to snip. Compare Swedish snobba "lop off, snuff (a candle)," Old Norse snubbotr "snubbed, nipped, with the tip cut off." Also compare earlier Middle English snibben "rebuke, reprove," from a Scandinavian source.

The sense of "cut off, cut short, nip" is from 1610s, now obsolete. The meaning "treat coldly" appeared early 18c. Related: Snubbed; snubbing.

"short and turned up," 1725, in snub-nosed, in reference to a shape of rather flat nose with a turned-up tip, from snub (v.). The notion is of being "cut short."

"a rebuke, an intentional slight," 1530s, from snub (v.).