Ău-thŏr'i-ta-tĭve, a.

a. 1. Having due authority; so established or expressed as to demand credit or acceptance; determinative; commanding. “The sacred functions of authoritative teaching.” Barrow. 2. Having an air of authority; positive; dictatorial; peremptory. The mock authoritative manner of the one, and the insipid mirth of the other. Swift.