Meaning

noun an instance of driving away or warding off

noun a refusal to recognize someone you know

verb refuse to acknowledge

originFrom Middle English snubben (also snibben), from Old Norse snubba (“to curse, chide, snub, scold, reprove”), which, like the source of English snip, is probably imitative in some manner. Cognate with Danish snibbe, dialectal Swedish snebba.

Etymology from Wiktionary, CC BY-SA 3.0