'authoritative' definitions:

Definition of 'authoritative'

From: WordNet
adjective
Having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner" [syn: authoritative, important]
adjective
Of recognized authority or excellence; "the definitive work on Greece"; "classical methods of navigation" [syn: authoritative, classical, classic, definitive]
adjective
Sanctioned by established authority; "an authoritative communique"; "the authorized biography" [syn: authoritative, authorized, authorised]

Synonyms of 'authoritative'

From: Moby Thesaurus

Words containing 'authoritative'