1. A person who behaves in a servile or obsequious manner; a toady

2. One with an affinity for condiments of the mustard persuasion.

3. too confident, in a way that is slightly unpleasant or rude

4. Also see Aristotle complex, bootlicker, cocksure
He was being a dion and ignoring the facts right in front of him.
by Fd27 August 30, 2020
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