Definition of sesquipedalian
- using long words or very long
Usage examples of sesquipedalian
His sesquipedalian writing used words so long that a simple apology became a page of jargon.
The professor joked that “antidisestablishmentarianism” is a sesquipedalian word because it is unusually long.
Instead of clear instructions, the manual offered a sesquipedalian paragraph full of unnecessary long words.