Wiktionary
undeferential
a. Not showing appropriate respect or courtesy
WordNet
undeferential
adj. not showing courteous respect
Usage examples of "undeferential".
Perhaps he had an animus against these bumptious, undeferential, overcritical Americans, and thought it was time to give one of them a lesson.
Obviously they were not like a Royal Navy crew, being much more talkative, independent, undeferential, partners rather than subordinates.