snappy (adj.)youdaoicibaDictYouDict[snappy 词源字典]
"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.[snappy etymology, snappy origin, 英语词源]