[dawg-muh-tiz-uh m, dog-]
dogmatic character; unfounded positiveness in matters of opinion; arrogant assertion of opinions as truths.
Origin of dogmatism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
c.1600, but not in common use until 19c., from French dogmatisme (16c.), from Medieval Latin dogmatismus, from Latin dogma (see dogma).
Online Etymology Dictionary, © 2010 Douglas Harper