self-opinionated

comparative more self-opinionated · superlative most self-opinionated

1. Obstinately adhering to one's own opinion.

   1 more example

   Mr. F. J. Catton recalls that Dugald Drummond, like Webb, was both a pioneer in multi-cylinder propulsion and also in the use of uncoupled driving wheels, with his "720" class 4-2-2-0 engines; both men, however, were self-opinionated autocrats, and their innovations might have been far more successful had they taken the advice of others.

   1956 November, “Notes and News: Further Webb Compound Impressions”, in Railway Magazine, page 787