"quick, energetic," 1825, from snap (v.) + -y (2). Meaning "clever, smart" is from 1871; that of "neat and stylishly elegant" is from 1881. Related: Snappily; snappiness. Command make it snappy attested from 1910.
例文
1. He wasn 't irritable or snappy or anything,just slightly perplexed.
彼は怒りや焦りが好きなわけではなく、少し困惑しているだけだ。
2.She has already made a name for herself as a snappy dresser.