polysyllabic

/ˌpɑlisɪˈlæbɪk/
adjective
  1. Having more than one syllable; often used to describe long or complex words.
    • She enjoys using polysyllabic vocabulary in her essays to sound more formal.
    • Teachers sometimes ask students to break polysyllabic words into smaller parts.
    • "Unbelievable" is a polysyllabic word with five syllables.
Antonyms
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