The Collaborative International Dictionary of English v.0.48:
Monosyllabic \Mon`o*syl*lab"ic\, a. [Cf. F. monosyllabique.] Being a monosyllable, or composed of monosyllables; as, a monosyllabic word; a monosyllabic language. -- Mon`o*syl*lab"ic*al*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
monosyllabically adv 1: in a monosyllabic manner