- having only one syllable, as the word no.
- having a vocabulary composed primarily of monosyllables or short, simple words.
- very brief; terse or blunt: a monosyllabic reply.
- (of a word) containing only one syllable
- characterized by monosyllables; curta monosyllabic answer
adj.1824, of languages; 1828, of words; 1870, of persons, from monosyllable + -ic. Earlier form was monosyllabical (1680s, of words). Related: Monosyllabically.