- The act or practice of using large words when smaller words will do.
- A long word.
- (context, of a word or words) long; polysyllabic.
Etymology: From sesqui-, from Latin sesqui, one and a half, + pedal, from Latin pes, pedis, foot, + adjective suffix -alis, + adjective suffix -ian: Lit. a foot and a half long. cf. F. sesquipédal, L. sesquipedalis.
- More people know the word "antidisestablishmentarianism" than know what it means.
- Pertaining to or given to the use of overly long words.
- Our dinner guest was so that no one could understand what he said.
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Full Definition of sesquipedalian