authoritative

Meanings

Adjective Satellite

• having authority or ascendancy or influence
  • "the captain's authoritative manner"
• of recognized authority or excellence
• sanctioned by established authority
  • "an authoritative communique"

Adj

• Arising or originating from a figure of authority
• Highly accurate or definitive; treated or worthy of treatment as a scholarly authority
• Having a commanding style.

Synonyms

authorised, authorized, classic, classical, definitive, formal, grave, important, magisterial, masterful, of record, oracular, precise, proper, sterling