Adjective: authoritative u'thó-ri,tey-tiv [N. Amer], o'thó-ri-tu-tiv [Brit]
- Endowed with authority
"an authoritative communiqué";
- authorized, authorised [Brit]
- Having authority, ascendancy or influence
"the captain's authoritative manner";
- important
- Of recognized authority or excellence
"the authoritative work on Greece";
- definitive
See also: approved, authorisation [Brit], authorization, canonised [Brit], canonized, influential, lawful, legitimate, mandate, official, sanctioned, sceptered [US], sceptred [Brit, Cdn], standard
Antonym: unauthorised [Brit]
Encyclopedia: Authoritative