Definition of overopinionated
: excessively opinionated
- She's disgusted that her field … is being infiltrated by … overopinionated philistines …
- —Jane Goldman
- … a Web site one can visit to ask random questions … of an anonymous audience of overeducated and overopinionated geeks.
- —Tom Vanderbilt
- … the overopinionated … little book that put so many people in this unhappy state of grammatical angst.
- —Geoffrey K. Pullum
