"proud, arrogant," 1918, noted that year as college slang, from snoot (n.) + -y (2). Probably with suggestions of snouty (1858); the notion being of "looking down one's nose." Related: Snootily; snootiness.
例文
1. Everyone thought Annabel was being snooty .
誰もがアナベルがあまりにも眼中に人がいないと思っている。
2.I didn 't like the way you looked at May Arnold,or the snooty way you talked.