Dictionary and Thesaurus

Definition of Authoritative

• (a.) Having, or proceeding from, due authority; entitled to obedience, credit, or acceptance; determinate; commanding.
• (a.) Having an air of authority; positive; dictatorial; peremptory; as, an authoritative tone.

Synonyms of Authoritative

• Important
• Classical
• Classic
• Definitive
• Authorized
• Authorised

Antonyms of Authoritative

Homophones of Authoritative