1. having many syllables; using long words
Usage: formal
2. characterized by the use of long, pompous words
Usage: often disapproving

1. a long word or a person who uses long words
Usage: formal

Examples

• The professor’s sesquipedalian lecture confused many students.
• His sesquipedalian writing style made the simple concept unnecessarily complex.
• She avoided sesquipedalian terms when explaining the theory to children.
• The politician’s sesquipedalian speech impressed few voters.
• Antidisestablishmentarianism is a famous sesquipedalian.
• The author was known as a sesquipedalian who loved elaborate vocabulary.
• The legal document was full of sesquipedalian language.