authoritative

IPA: ʌθˈɔrʌteɪtɪv

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.

Examples of "authoritative" in Sentences

I will believe it when I see it in authoritative case law.
When people refer to it they usually preface it with the word "authoritative" or "independent".
The report compared the names of people on the tickets to what it called authoritative lists of Hispanic names developed bythe U.S. Census and other researchers.
SEAL database; most are completely ignorant of the ability to rapidly obtain authoritative verification or denial of claims regarding military service as a SEAL.
The state-run Xinhua News Agency said Thursday that foreign media reports that Mr. Jiang has died are "pure rumor," citing what it called "authoritative sources."
The report compared the names of people on the tickets to what it called authoritative lists of Hispanic names developed by the U.S. Census and other researchers.
The ideal parents ` style is what we call the authoritative parenting style which has a balance between correction and loving nurture and spanking can be an effective tool within that style of parenting.
Steel Association (CISA) and the heads of more than 10 mills wrote the joint letter to Wen on March 11, asking him to take up the issue of rising iron ore import prices at a national level, the paper reported, quoting what it described as authoritative sources.