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valid - 20 thesaurus results
| Main Entry: | valid |
| Part of Speech: | adjective |
| Definition: | right, genuine |
| Synonyms: | accurate, authentic, authoritative, binding, bona fide, cogent, compelling, conclusive, confirmed, convincing, credible, efficacious, efficient, good, irrefutable, just, kosher*, lawful, legal, legitimate, logical, official, original, persuasive, potent, powerful, pure, solid, sound, stringent, strong, substantial, telling, tested, true, trustworthy, ultimate, unadulterated, weighty, well-founded, well-grounded, attested, determinative, in force, legit, proven, unanswerable, uncorrupted |
| Antonyms: | invalid, unacceptable, unreal, unsound, wrong |
* = informal/non-formal usage
| Main Entry: | analytic/analytical |
| Part of Speech: | adjective |
| Definition: | examining and determining |
| Synonyms: | cogent, conclusive, detailed, diagnostic, discrete, explanatory, expository, inquiring, inquisitive, judicious, logical, organized, penetrating, perceptive, perspicuous, precise, questioning, rational, reasonable, scientific, searching, solid, sound, studious, subtle, systematic, testing, thorough, valid, well-grounded, dissecting, interpretive, investigative, problem-solving, ratiocinative |
| Main Entry: | authentic |
| Part of Speech: | adjective |
| Definition: | real, genuine |
| Synonyms: | accurate, actual, authoritative, bona fide, certain, convincing, credible, creditable, dependable, factual, faithful, legitimate, official, original, pure, reliable, sure, true, trustworthy, trusty, valid, veritable, for real, legit, twenty-four carat |
| Notes: | genuine means not fake or counterfeit - or sincerely felt or expressed, while authentic means conforming to fact and therefore worthy of belief and trust |
| Antonyms: | counterfeit, fake, false, falsified, unauthorized, unreal, ungenuine |
| Main Entry: | bona fide |
| Part of Speech: | noun |
| Definition: | genuine |
| Synonyms: | actual, authentic, honest, kosher, legitimate, real, true, valid |
| Main Entry: | cogent |
| Part of Speech: | adjective |
| Definition: | effective |
| Synonyms: | apposite, apt, compelling, conclusive, consequential, convincing, fitting, forceful, forcible, influential, irresistible, meaningful, momentous, persuasive, pertinent, potent, powerful, relevant, satisfactory, satisfying, significant, solid, sound, strong, telling, urgent, valid, weighty, well-grounded, convictive, inducing, justified, puissant, suasive |
| Antonyms: | impotent, ineffective, invalid, weak |
| Main Entry: | confirmed |
| Part of Speech: | adjective |
| Definition: | habitual; rooted |
| Synonyms: | accepted, accustomed, chronic, deep-rooted, deep-seated, dyed-in-the-wool*, entrenched, fixed, hardened, ingrained, inveterate, proved, seasoned, settled, staid, valid, worn, firmly established, habituated, hard-shell, inured, long-established |
| Antonyms: | indefinite, infrequent, sporadic, uncommitted, undecided, unconfirmed |
* = informal/non-formal usage
| Main Entry: | convincing |
| Part of Speech: | adjective |
| Definition: | persuasive |
| Synonyms: | acceptable, authentic, cogent, conclusive, credible, dependable, faithful, hopeful, impressive, incontrovertible, likely, moving, plausible, possible, powerful, presumable, probable, rational, reasonable, reliable, satisfactory, satisfying, solid, sound, telling, trustworthy, trusty, valid, believeable, swaying |
| Antonyms: | doubtful, dubious, implausible, improbable, incredible, unconvincing, unlikely, unpersuasive |
| Main Entry: | credible |
| Part of Speech: | adjective |
| Definition: | believable |
| Synonyms: | aboveboard, conceivable, conclusive, creditable, dependable, honest, imaginable, likely, plausible, possible, probable, probably, rational, reasonable, reliable, satisfactory, satisfying, seeming, sincere, solid, sound, straight, tenable, thinkable, trustworthy, trusty, up front, valid, colorable, determinative, honest to God, supposable |
| Antonyms: | implausible, impossible, improbable, inconceivable, incredible, unbelievable, unimaginable, unlikely, untenable |
| Main Entry: | defensible |
| Part of Speech: | adjective |
| Definition: | justifiable |
| Synonyms: | excusable, fit, logical, pardonable, permissible, plausible, proper, tenable, valid, condonable, defendable, vindicable, warrantable |
| Antonyms: | indefensible, invalid, unjustifiable, unvindicable |
| Main Entry: | effectual |
| Part of Speech: | adjective |
| Definition: | influential; authoritative |
| Synonyms: | adequate, binding, capable, conclusive, decisive, effective, efficacious, efficient, forcible, lawful, legal, licit, potent, powerful, practicable, productive, qualified, serviceable, sound, strong, successful, telling, useful, valid, virtuous, workable, accomplishing, achieving, determinative, effecting, fulfilling, in force |
| Antonyms: | impotent, incapable, ineffectual, unproductive, unsuccessful, useless, weak |
| Main Entry: | factual |
| Part of Speech: | adjective |
| Definition: | real, correct |
| Synonyms: | absolute, accurate, actual, authentic, card-carrying, certain, circumstantial, close, credible, descriptive, exact, faithful, genuine, hard, kosher*, legit, legitimate, literal, objective, on the level*, positive, precise, righteous, specific, straight from horse's mouth, sure, sure-enough, true, true-to-life, unadorned, unbiased, undoubted, unquestionable, valid, veritable |
| Antonyms: | biased, false, imprecise, incorrect, unfactual, untruthful |
* = informal/non-formal usage
| Main Entry: | forcible |
| Part of Speech: | adjective |
| Definition: | powerful, aggressive |
| Synonyms: | active, armed, assertive, cogent, compelling, compulsory, drastic, effective, efficient, energetic, forceful, impressive, intense, mighty, militant, persuasive, potent, strong, telling, valid, vehement, vigorous, violent, weighty, coercive, puissant |
| Antonyms: | weak, nonaggressive |
| Main Entry: | honest-to-God |
| Part of Speech: | adjective |
| Definition: | genuine |
| Synonyms: | absolute, accurate, actual, authentic, bona fide, certain, factual, honest, kosher*, legitimate, official, on the level*, positive, real, straight, true, unquestionable, valid, authenticated, certified, for real, for-sure, honest-to-goodness, legit, no buts about it, on the up-and-up, real stuff, really-truly, sure-enough, sure-thing |
* = informal/non-formal usage
| Main Entry: | justifiable |
| Part of Speech: | adjective |
| Definition: | reasonable, well-founded |
| Synonyms: | acceptable, admissible, allowable, defensible, excusable, fair, fit, forgivable, lawful, legitimate, licit, logical, pardonable, probable, proper, reasonable, right, rightful, sound, suitable, tenable, understandable, valid, condonable, legit, remissible, vindicable, warrantable |
| Antonyms: | unjustifiable, unreasonable, unwarranted |
| Main Entry: | lawful |
| Part of Speech: | adjective |
| Definition: | allowable, legitimate |
| Synonyms: | authorized, bona fide, canonical, constitutional, due, enforced, established, innocent, judicial, just, justifiable, kosher*, legal, licit, mandated, official, on the level*, ordained, ordered, permissible, proper, protected, rightful, ruled, statutory, valid, vested, warranted, card-carrying, commanded, condign, decreed, enacted, enjoined, judged, jural, juridical, jurisprudent, legalized, legislated, legit, legitimatized, of right, on the up and up, passed, warrantable |
| Antonyms: | illegal, illegitimate, illicit, prohibited, taboo, unlawful |
* = informal/non-formal usage
| Main Entry: | legal |
| Part of Speech: | adjective |
| Definition: | allowable, permissible |
| Synonyms: | acknowledged, authorized, clean*, constitutional, due, enforced, fair, forensic, granted, innocent, judicial, just, justifiable, lawful, legitimate, licit, on the level*, ordained, prescribed, proper, protected, right, rightful, sanctioned, sound, statutory, straight, valid, warranted, allowed, card-carrying, chartered, condign, contractual, decreed, enforcible, enjoined, judged, juridical, justified, legalized, legit, on the up and up, passed, precedented, sure enough, within the law |
| Antonyms: | illegal, illegitimate, illicit, unlawful, wrong |
* = informal/non-formal usage
| Main Entry: | logical |
| Part of Speech: | adjective |
| Definition: | probable, reasonable |
| Synonyms: | analytical, clear, cogent, coherent, compelling, congruent, consequent, consistent, convincing, deducible, discerning, discriminating, fair, germane, inferential, intelligent, judicious, justifiable, kosher*, legitimate, lucid, necessary, obvious, perceptive, perspicuous, pertinent, plausible, rational, relevant, sensible, sound, subtle, telling, valid, wise, analytic, commonsensical, extensional, holding together, holding water, juridicious, legit, most likely, well-organized |
| Antonyms: | illogical, improbable, irrational, unlikely, unreasonable |
* = informal/non-formal usage
| Main Entry: | meaningful |
| Part of Speech: | adjective |
| Definition: | significant |
| Synonyms: | big, clear, concise, consequential, considerable, deep, eloquent, essential, exact, explicit, expressive, heavy, important, indicative, intelligible, material, momentous, pointed, pregnant, purposeful, relevant, sententious, serious, substantial, succinct, suggestive, useful, valid, weighty, worthwhile, allusive |
| Antonyms: | insignificant, meaningless, useless, worthless |
| Main Entry: | official |
| Part of Speech: | adjective |
| Definition: | authorized, legitimate |
| Synonyms: | accredited, approved, authentic, authoritative, bona fide, canonical, cathedral, ceremonious, cleared, conclusive, correct, customary, decided, decisive, definite, endorsed, established, ex officio, fitting, formal, legitimate, licensed, okay*, ordered, orthodox, positive, precise, proper, real, recognized, rightful, sanctioned, suitable, true, valid, authenticated, certified, ex cathedra |
| Antonyms: | unauthorized, unofficial, unsanctioned |
* = informal/non-formal usage
| Main Entry: | on the level |
| Part of Speech: | adjective |
| Definition: | quite honest |
| Synonyms: | aboveboard, accepted, accredited, authentic, authorized, fair, fair and square, honest, lawful, legitimate, official, proper, sanctioned, square, straight, true, valid, verifiable, for real, for real, on the up and up, on the up-and-up, right as rain, straight-shooting |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Copyright © 2009, Dictionary.com, LLC. All rights reserved.

