Thesaurus.com
Dictionary.com
Definitions

authoritative

[uh-thawr-i-tey-tiv, uh-thor-] / əˈθɔr ɪˌteɪ tɪv, əˈθɒr- /
ADJECTIVE
recognized as true, valid
Synonyms
STRONGEST
accurate authentic definitive dependable factual reliable scholarly trustworthy truthful
WEAK
attested authenticated circumstantiated confirmed documented faithful learned legit proven righteous sound straight from horse's mouth supported validated verified veritable
Antonyms
STRONGEST
dishonest false inaccurate irresponsible undependable unreliable untrustworthy untruthful
ADJECTIVE
domineering
Synonyms
STRONGEST
commanding decisive dominating imposing
WEAK
assertive authoritarian autocratic dictatorial doctrinaire dogmatic imperative imperious masterly officious peremptory self-assured
Antonyms
STRONGEST
indecisive
ADJECTIVE
official, authorized
Synonyms
WEAK
administrative approved bureaucratic canonical departmental ex cathedra ex officio executive imperial lawful legal legitimate magisterial mandatory ruling sanctioned sovereign supreme

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Combining Barron’s authoritative financial analysis with exclusive geopolitical intelligence powered by Oxford Analytica, each weekly edition connects how global risk, policy shifts and international developments impact your portfolio.

From Barron's • Apr. 23, 2026

We are put in charge of making our own way, through tapestries and tea sets, past ancient jug and contemporary sphinx, without heavy-handed authoritative direction.

From Los Angeles Times • Apr. 22, 2026

He is editor-in-chief for Lloyd’s List, the most authoritative publication on shipping news, data and intelligence during a webinar hosted Monday by the Henry Jackson Society, a foreign policy thinktank.

From MarketWatch • Apr. 21, 2026

Lead researcher Dr Nicholas Tiller explains: "They are designed to give very confident, very authoritative responses, and that conveys a sense of credibility, so the user assumes that it must know what it's talking about."

From BBC • Apr. 18, 2026

In the daytime, he continued to teach, and to grace meetings with his most authoritative manner, and to hold office hours.

From "Typical American" by Gish Jen

Vocabulary lists containing authoritative

100 SAT Words Beginning with "A"

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Vocabulary Video Contest (2013) - List 2

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

The Last Cuentista

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!