multisyllabic

From multi- +‎ syllabic.

multisyllabic (not comparable)

1. (of a word) Having more than one syllable.

   Synonym: polysyllabic

   Antonym: monosyllabic

   • 2023, Vajra Chandrasekera, The Saint of Bright Doors, Solaris (2024), page 305:

     But it’s a dialect Fetter doesn’t know. It sounds old, rolling and multisyllabic and liquid.