overopinionated

/ˌoʊvərəˈpɪnjəˌneɪtɪd/
adjective
  1. Having very strong opinions and expressing them too forcefully, without being open to other views.
    • My uncle is so overopinionated that he won't even listen to anyone else's point of view.
    • She tries not to be overopinionated in meetings, preferring to hear everyone's ideas first.
    • The debate became unpleasant because of a few overopinionated participants who kept interrupting.
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