authoritative

• POS: Adjective
• HYPHEN: au=thor=i=ta=tive

CIDE DICTIONARY

authoritative, a. 

•  Having, or proceeding from, due authority; entitled to obedience, credit, or acceptance; determinate; commanding.  [1913 Webster]

  "The sacred functions of authoritative teaching."  [1913 Webster]
•  Having an air of authority; positive; dictatorial; peremptory; as, an authoritative tone.  [1913 Webster]

  "The mock authoritative manner of the one, and the insipid mirth of the other."  [1913 Webster]

OXFORD DICTIONARY

authoritative, adj.
1 being recognized as true or dependable.
2 (of a person, behaviour, etc.) commanding or self-confident.
3 official; supported by authority (an authoritative document).

Derivative

authoritatively adv. authoritativeness n.

THESAURUS

authoritative

Christian, Daedalian, absolute, absolutist, absolutistic, accepted, accurate, acquainted with, adept, adroit, approved, apt, arbitrary, aristocratic, armipotent, arrogant, artistic, ascendant, assuring, at home in, at home with, attested, authentic, authenticated, authoritarian, authorized, autocratic, binding, bossy, bravura, brilliant, canonical, cathedral, certified, charismatic, charming, circumstantiated, clean, clever, clothed with authority, cogent, commanding, competent, conclusive, confined, confirmed, consequential, considerable, consistent, controlling, conventional, conversant with, convictional, convincing, coordinated, correct, crack, crackerjack, cunning, customary, cute, daedal, decisive, deft, dependable, despotic, determinative, dexterous, dextrous, dictated, dictatorial, didactic, diplomatic, doctrinaire, documented, dogmatic, dominant, domineering, duly constituted, dynamic, effective, effectual, efficacious, eminent, empowered, enchanting, energetic, estimable, evangelical, ex cathedra, ex officio, excellent, expert, factual, faithful, familiar with, fancy, feature, featured, feudal, firm, forceful, forcible, formulary, good, goodish, governing, graceful, great, grinding, handy, hard and fast, hegemonic, hegemonistic, high-handed, high-potency, high-powered, high-pressure, high-tension, imperative, imperial, imperious, important, impressive, in force, in power, indisputable, influential, informed in, ingenious, instructive, intimate with, irrefutable, irresistible, just, knowledgeable, lawful, leading, learned, legal, legitimate, limited, literal, logical, lordly, magisterial, magistral, magnetic, mandatory, master of, masterful, masterly, mighty, mighty in battle, momentous, monocratic, neat, no mean, of the faith, official, operative, oppressive, orthodox, orthodoxical, overbearing, overruling, peremptory, personable, persuasive, politic, potent, powerful, preceptive, preeminent, prepotent, prescribed, prescript, prescriptive, prestigious, professional, proficient, proficient in, prominent, proper, proven, puissant, quick, quite some, ranking, ready, received, regulation, reliable, repressive, reputable, resourceful, restricted, right, rubric, ruling, sanctioned, satisfactory, satisfying, scholarly, scriptural, self-consistent, senior, severe, skillful, slick, solid, some, sound, specialist, specialistic, specialized, standard, statesmanlike, statutory, strict, striking, strong, strong in, stylish, suasive, substantial, sufficient, superior, suppressive, supreme, sure, tactful, technical, telling, textual, the compleat, the complete, totalitarian, traditional, traditionalistic, true, true-blue, trustable, trustworthy, truthful, tyrannical, tyrannous, unrefutable, up on, valid, validated, verifiable, verified, veritable, versed in, vigorous, virtuoso, vital, weighty, well-done, well-founded, well-grounded, well-read in, winning, workmanlike

ROGET THESAURUS

authoritative

Government

N government, legal authority, soveriegn, sovereign authority, authority, master, direction, national government, nation, state, country, nation- state, dominion, republic, empire, union, democratic republic, kingdom, principality, state government, state, shire, province, county, canton, territory, duchy, archduchy, archdukedom, woiwodshaft, commonwealth, region, property, county, parish city, domain, tract, arrondissement, mofussil, commune, wappentake, hundred, riding, lathe, garth, soke, tithing, ward, precinct, bailiwick, command, empire, sway, rule, dominion, domination, sovereignty, supremacy, suzerainty, lordship, headship, chiefdom, seigniory, seigniority, rule, sway, command, control, administer, govern, lead, preside over, reign, possess the throne, be seated on the throne, occupy the throne, sway the scepter, wield the scepter, wear the crown, state, realm, body politic, posse comitatus, judicature, cabinet, seat of government, seat of authority, headquarters, accession, installation, politics, reign, regime, dynasty, directorship, dictatorship, protectorate, protectorship, caliphate, pashalic, electorate, presidency, presidentship, administration, proconsul, consulship, prefecture, seneschalship, magistrature, magistracy, monarchy, kinghood, kingship, royalty, regality, aristarchy, aristocracy, oligarchy, democracy, theocracy, demagogy, commonwealth, dominion, heteronomy, republic, republicanism, socialism, collectivism, mob law, mobocracy, ochlocracy, vox populi, imperium in imperio, bureaucracy, beadledom, bumbledom, stratocracy, military power, military government, junta, feodality, feudal system, feudalism, thearchy, theocracy, dinarchy, duarchy, triarchy, heterarchy, duumvirate, triumvirate, autocracy, autonomy, limited monarchy, constitutional government, constitutional monarchy, home rule, representative government, monocracy, pantisocracy, gynarchy, gynocracy, gynaeocracy, petticoat government, legislature, judiciary, administration, office of the president, office of the prime minister, cabinet, senate, house of representatives, parliament, council, courts, supreme court, state, interior, labor, health and human services, defense, education, agriculture, justice, commerce, treasury, Federal Bureau of Investigation, FBI, Central Intelligence Agency, CIA, National Institutes of Health, NIH, Postal Service, Post Office, Federal Aviation Administration, FAA, president, vice president, cabinet member, prime minister, minister, senator, representatative, president pro tem, speaker of the house, department head, section head, section chief, federal judge, justice, justice of the supreme court, chief justice, treasurer, secretary of the treasury, director of the FBI, governor, state cabinet member, state senator, assemblyman, assemblywoman, regal, sovereign, governing, royal, royalist, monarchical, kingly, imperial, imperiatorial, princely, feudal, aristocratic, autocratic, oligarchic, republican, dynastic, ruling, regnant, gubernatorial, imperious, authoritative, executive, administrative, clothed with authority, official, departmental, ex officio, imperative, peremptory, overruling, absolute, hegemonic, hegemonical, authorized, government, public, national, federal, his majesty's, her majesty's, state, county, city, N, a dog's obeyed in office, cada uno tiene su alguazil, le Roi le veut, regibus esse manus en nescio longas, regnant populi, the demigod Authority, the right divine of kings to govern wrong, uneasy lies the head that wears a crown.

Command

N command, order, ordinance, act, fiat, hukm, bidding, dictum, hest, behest, call, beck, nod, despatch, dispatch, message, direction, injunction, charge, instructions, appointment, fixture, demand, exaction, imposition, requisition, claim, reclamation, revendication, ultimatum, request, requirement, dictation, dictate, mandate, caveat, decree, senatus consultum, precept, prescript, rescript, writ, ordination, bull, ex cathedra pronouncement, edict, decretal, dispensation, prescription, brevet, placit, ukase, ukaz, firman, hatti- sherif, warrant, passport, mittimus, mandamus, summons, subpoena, nisi prius, interpellation, citation, word, word of command, mot d'ordre, bugle call, trumpet call, beat of drum, tattoo, order of the day, enactment, plebiscite, commanding, authoritative, decretory, decretive, decretal, callable, jussive, in a commanding tone, by a stroke of the pen, by a dash of the pen, by order, at beat of drum, on the first summons, the decree is gone forth, sic volo sic jubeo, le Roi le veut, boutez en avant.

Certainty

N certainty, necessity, certitude, surety, assurance, dead certainty, moral certainty, infallibleness, infallibility, reliability, indubitableness, inevitableness, unquestionableness, gospel, scripture, church, pope, court of final appeal, res judicata, ultimatum positiveness, dogmatism, dogmatist, dogmatizer, doctrinaire, bigot, opinionist, Sir Oracle, ipse dixit, fact, positive fact, matter of fact, fait accompli, certain, sure, assured, solid, well-founded, unqualified, absolute, positive, determinate, definite, clear, unequivocal, categorical, unmistakable, decisive, decided, ascertained, inevitable, unavoidable, avoidless, ineluctable, unerring, infallible, unchangeable, to be depended on, trustworthy, reliable, bound, unimpeachable, undeniable, unquestionable, indisputable, incontestable, incontrovertible, indubitable, irrefutable, conclusive, without power of appeal, indubious, without doubt, beyond a doubt, without a shade or shadow of doubt, without question, beyond question, past dispute, clear as day, beyond all question, beyond all dispute, undoubted, uncontested, unquestioned, undisputed, questionless, doubtless, authoritative, authentic, official, sure as fate, sure as death and taxes, sure as a gun, evident, self-evident, axiomatic, clear, clear as day, clear as the sun at noonday, certainly, for certain, certes, sure, no doubt, doubtless, and no mistake, flagrante delicto, sure enough, to be sure, of course, as a matter of course, a coup sur, to a certainty, in truth, at any rate, at all events, without fail, coute que coute, coute qu'il coute, whatever may happen, if the worst come to the worst, come what may, happen what may, come what will, sink or swim, rain or shine, cela va sans dire, there is no question, no question, not a shadow of doubt, there is not a shadow of doubt, the die is cast, facts are stubborn things.