From Longman Dictionary of Contemporary Englishmonosyllabicmon‧o‧syl‧lab‧ic /ˌmɒnəsɪˈlæbɪk◂ $ ˌmɑː-/ adjective 1 SLRUDE/IMPOLITEsomeone who speaks in a monosyllabic way does not say very much and does not try to be friendly He made monosyllabic replies to my questions.2 technicalSL a monosyllabic word has only one syllable
Examples from the Corpus
monosyllabic• Intensive training is making many activists a trifle monosyllabic.• In the corridor there were orders given and monosyllabic assents.• He made monosyllabic replies and then repeated his request for a small bowl of harees.• Muriel inquired after their day and received polite but monosyllabic replies from each of them.• He grunted monosyllabic responses to questions.• These monosyllabic roots are the building blocks of the language.• Flies with fast clipped wingbeats, always uttering its shrill, monosyllabic screech.• The assumption that each character represents an independent meaningful syllable leads to the conclusion that each character represents a monosyllabic word. 