monosyllabic (adj.)youdaoicibaDictYouDict[monosyllabic 词源字典]
1824, of languages; 1828, of words; 1870, of persons, from monosyllable + -ic. Earlier form was monosyllabical (1680s, of words). Related: Monosyllabically.[monosyllabic etymology, monosyllabic origin, 英语词源]