Synonyms for Authoritatively:

• adj.

  •Other relevant words: (adjective)
  • authorized,
  • officially.

• adv

  •authoritatively (adverb)
  • masterfully.

• adv.

  •all (adverb)
  • authoritatively,
  • magisterially.
  •authoritatively (adverb)
  • powerfully,
  • autocratically,
  • dictatorially,
  • arrogantly,
  • impressively,
  • importantly,
  • consequentially,
  • effectively,
  • influentially,
  • effectually.
  •expertly (adverb)
  • professionally,
  • skillfully,
  • artistically,
  • sophisticatedly,
  • adroitly,
  • adeptly,
  • expertly.
  •influentially (adverb)
  • motivationally,
  • supremely,
  • prejudicially,
  • predominantly.
  •officially (adverb)
  • Approvedly.
  •powerfully (adverb)
  • mightily,
  • potently,
  • energetically,
  • vigorously,
  • competently,
  • strongly,
  • forcefully.
  •sagaciously (adverb)
  • masterly,
  • philosophically,
  • intellectually,
  • wisely,
  • brilliantly,
  • sagaciously,
  • intelligently.

• n.

  •authoritatively (noun)
  • with authority.
  •Other relevant words: (noun)
  • imperiously,
  • Commandingly,
  • imperatively.

• Other synonyms:

  •
  • ex officio.
  •Other relevant words:
  • licitly,
  • sure enough,
  • considerably,
  • really,
  • canonic,
  • shrewdly,
  • consummate,
  • lawfully,
  • significantly,
  • like an expert,
  • smartly,
  • sure,
  • virtuoso,
  • by right of office,
  • capably,
  • easily,
  • utterly,
  • authorised,
  • substantially,
  • important,
  • for certain,
  • ratified,
  • genuinely,
  • formally,
  • right,
  • surely,
  • masterful,
  • dead,
  • faithfully,
  • comfortably,
  • acutely,
  • aptly,
  • brightly,
  • skilfully,
  • good,
  • swell,
  • extremely,
  • advantageously,
  • sincerely,
  • mighty,
  • sublimely,
  • fountainhead,
  • sagely,
  • intimately,
  • ably,
  • canonical,
  • imposingly,
  • wellspring,
  • approved,
  • powerful,
  • definitive,
  • efficaciously,
  • rightfully,
  • unfeignedly,
  • unambiguously,
  • in effect,
  • astutely,
  • preponderantly,
  • sapiently,
  • perfectly,
  • for sure,
  • bright,
  • sure as shooting,
  • in truth.
  •Other relevant words (noun):
  • legitimately,
  • authoritative,
  • Authenticly,
  • highly,
  • departmentally,
  • truly,
  • reliably,
  • dependably,
  • trustworthily,
  • certainly,
  • sanctioned,
  • classically,
  • peremptorily,
  • crucially,
  • unequivocally,
  • validly,
  • authentically,
  • absolutely,
  • truely,
  • Definitively,
  • standardly,
  • Executively,
  • haughtily,
  • dominantly,
  • overbearingly,
  • Determinately,
  • well,
  • administratively.

Antonyms for Authoritatively:

• adv.

  • officially
    informally, unceremoniously, casually.