Past Tenses
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authoritative synonyms

Trying to find another word for authoritative in English? No problem. Our thesaurus contains synonyms of authoritative in 25 different contexts. We have listed all the similar and related words for authoritative alphabetically.

  • authentic
  • careful
  • close
  • concrete
  • correct
  • defined
  • definite
  • deft
  • detailed
  • discriminating
  • discriminative
  • distinct
  • exact
  • explicit
  • adjure
  • announce
  • argue
  • assert
  • asservate
  • authenticate
  • aver
  • bear out
  • bear witness
  • certify
  • confirm
  • corroborate
  • countersign
  • declare
  • accurate
  • actual
  • authoritative
  • bona fide
  • certain
  • convincing
  • credible
  • creditable
  • dependable
  • factual
  • faithful
  • for real
  • legit
  • legitimate
  • accredit
  • attest
  • authorize
  • bear out
  • certify
  • confirm
  • corroborate
  • endorse
  • guarantee
  • justify
  • prove
  • substantiate
  • validate
  • verify
  • accurate
  • attested
  • authentic
  • authenticated
  • confirmed
  • definitive
  • dependable
  • documented
  • factual
  • faithful
  • learned
  • legit
  • proven
  • reliable
  • accepted
  • accustomed
  • chronic
  • deep-rooted
  • deep-seated
  • dyed-in-the-wool
  • entrenched
  • firmly established
  • fixed
  • habituated
  • hard-shell
  • hardened
  • ingrained
  • inured
  • absolute
  • actual
  • categorical
  • clear-cut
  • closing
  • complete
  • completing
  • concluding
  • conclusive
  • decisive
  • definite
  • determining
  • downright
  • ending
  • always there
  • carrying the load
  • certain
  • constant
  • faithful
  • good as one's word
  • loyal
  • rocklike
  • secure
  • stable
  • staunch
  • steadfast
  • steady
  • sturdy
  • catalog
  • chronicle
  • cite
  • detail
  • log
  • note
  • register
  • report
  • write down
  • absolute
  • accurate
  • actual
  • authentic
  • card-carrying
  • certain
  • circumstantial
  • close
  • credible
  • descriptive
  • exact
  • faithful
  • genuine
  • hard
  • affectionate
  • allegiant
  • ardent
  • attached
  • behind one
  • circumspect
  • confiding
  • conscientious
  • constant
  • dependable
  • devoted
  • dutiful
  • dyed-in-the-wool
  • enduring
  • abstruse
  • academic
  • accomplished
  • bookish
  • brainy
  • conversant
  • cultivated
  • cultured
  • deep
  • educated
  • erudite
  • esoteric
  • experienced
  • expert
  • authorized
  • bona fide
  • canonical
  • card-carrying
  • commanded
  • condign
  • constitutional
  • decreed
  • due
  • enacted
  • enforced
  • enjoined
  • established
  • innocent
  • add up
  • affirm
  • analyze
  • ascertain
  • assay
  • attest
  • authenticate
  • back
  • bear out
  • certify
  • check
  • confirm
  • convince
  • corroborate
  • candid
  • careful
  • certain
  • conscientious
  • constant
  • decent
  • decisive
  • definite
  • dependable
  • determined
  • devoted
  • faithful
  • firm
  • good
  • angelic
  • blameless
  • charitable
  • commendable
  • conscientious
  • creditable
  • deserving
  • devoted
  • devout
  • dutiful
  • equitable
  • ethical
  • exemplary
  • fair
  • bookish
  • cultured
  • educated
  • erudite
  • intellectual
  • learned
  • lettered
  • literate
  • longhair
  • scholastic
  • schooled
  • studious
  • taught
  • trained
  • alive and kicking
  • effectual
  • entire
  • firm
  • fit
  • flawless
  • hale
  • hearty
  • in the pink
  • intact
  • perfect
  • right
  • right as rain
  • robust
  • accurate
  • attested
  • authentic
  • authenticated
  • circumstantiated
  • confirmed
  • definitive
  • dependable
  • documented
  • factual
  • faithful
  • learned
  • legit
  • proven
  • backed
  • financed
  • promoted
  • sustained
  • accurate
  • all right
  • always there
  • authentic
  • authoritative
  • believable
  • boy scout
  • convincing
  • credible
  • dependable
  • down home
  • ethical
  • exact
  • fly right
  • believable
  • candid
  • correct
  • exact
  • factual
  • faithful
  • forthright
  • frank
  • guileless
  • ingenuous
  • just
  • kosher
  • legit
  • like it is
  • John Hancock
  • approve
  • authenticate
  • authorize
  • bear out
  • certify
  • confirm
  • constitute
  • corroborate
  • endorse
  • give stamp of approval
  • give the go-ahead
  • give the green light
  • give the nod
  • confirmable
  • documented
  • established
  • seen
  • substantiated
  • verifiable
  • verificatory
  • actual
  • bona fide
  • factual
  • for real
  • genuine
  • indubitable
  • kosher
  • legit
  • real
  • true
  • undoubted
  • unquestionable
  • very

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