Snooty means behaving as if you were better than other people. A snooty waiter, a snooty tone, snooty about wine.
It is informal and takes about when the subject is named. The image is a nose in the air, which is where the word comes from: snoot is a form of snout, and the whole insult is that the person is looking down it.
1adjectivesnootyBehaving as if you were better than other people.
“The snooty waiter looked at our cheap shoes and gave us the worst table.”
snooty is a quality.
From snoot, a form of snout, plus -y — from the picture of a nose held in the air.
The is derived from snoot + -y, probably referring to a snobbish person often having their nose in the air (that is, acting disdainfully towards others). Snoot is a dialectal variant of snout. The is derived from the adjective.
Etymology from Wiktionary, CC BY-SA