Having or using many syllables. Now esp. of language or style: unnecessarily complex, abstruse. Cf. polysyllabic, adj.

= polysyllabic, adj.

Of a language, esp. one in its supposed early or primitive form: having only words of one syllable.

Of a word: consisting of many (usually more than three) syllables. Also, of language, etc.: consisting of or characterized by polysyllables.

Of or relating to polysyllabic languages.

(un-, prefix1 affix 1.)