Synonyms for Sincere:

• adj.

  •artless (adjective)
  • artless,
  • blunt,
  • broad,
  • callow,
  • candid,
  • direct,
  • downright,
  • frank,
  • ingenuous,
  • naive,
  • natural,
  • open,
  • outgoing,
  • overt,
  • plain,
  • straightforward,
  • trusting,
  • unaffected,
  • undisguised,
  • unpretentious,
  • unrestrained,
  • unsophisticated,
  • Plain-spoken,
  • Unartful,
  • Unbeguiling,
  • un-artificial,
  • uncalculating,
  • undeceitful,
  • undeceiving,
  • undeceptive,
  • genuine,
  • honest,
  • uncontrived.
  •believable (adjective)
  • credible.
  •direct (adjective)
  • undisguised.
  •enthusiastic (adjective)
  • fervent.
  •liege (adjective)
  • liege.
  •open (adjective)
  • Undissembled.
  •plainspoken (adjective)
  • plainspoken,
  • Plain-spoken.
  •real (adjective)
  • actual,
  • authentic,
  • concrete,
  • factual,
  • genuine,
  • honest,
  • real,
  • solid,
  • substantial,
  • tangible,
  • true,
  • veritable.
  •reliable (adjective)
  • credible,
  • True-hearted.
  •reputable (adjective)
  • reputable,
  • honorable.
  •simple (adjective)
  • artless.
  •sobersided (adjective)
  • sobersided,
  • in earnest.
  •straightforward, honest (adjective)
  • aboveboard,
  • actual,
  • artless,
  • bona fide,
  • candid,
  • dear,
  • devout,
  • earnest,
  • faithful,
  • forthright,
  • frank,
  • genuine,
  • guileless,
  • heartfelt,
  • natural,
  • no-nonsense,
  • open,
  • outspoken,
  • plain,
  • real,
  • regular,
  • righteous,
  • saintly,
  • serious,
  • square,
  • true,
  • true-blue,
  • trustworthy,
  • unaffected,
  • unfeigned,
  • unpretentious,
  • wholehearted,
  • Meant,
  • Undesigning,
  • Undissembled,
  • on the level,
  • on the line,
  • on up and up,
  • pretensionless,
  • up-front,
  • like it is.
  •true (adjective)
  • veridical,
  • sure-enough,
  • undistorted.
  •truthful (adjective)
  • earnest,
  • ethical,
  • honorable,
  • trustworthy,
  • truthful,
  • candid,
  • factual,
  • frank,
  • honest,
  • straightforward.

• n.

  •
  • decent,
  • fine,
  • good,
  • principled,
  • upstanding.
  •
  • hearty,
  • unmannered.
  •honest (noun)
  • faithful,
  • forthright,
  • reliable.
  •sincere (noun)
  • bona fide,
  • cordial,
  • dear,
  • devout,
  • earnest,
  • fervent,
  • genuine,
  • heart-whole,
  • heartfelt,
  • honest,
  • in earnest,
  • serious,
  • solemn,
  • true,
  • unfeigned,
  • whole-souled,
  • wholehearted.

• Other synonyms:

  •
  • bluntly,
  • confiding,
  • decent,
  • fair,
  • forthright,
  • outspoken,
  • principled,
  • reliable,
  • scrupulous,
  • sportsmanlike,
  • stainless,
  • unmannered,
  • unstudied,
  • upstanding.
  •
  • brutal,
  • genuinely,
  • honestly,
  • upfront.
  •
  • deep,
  • lily-white.
  •
  • fine.
  •
  • straight.
  •cordial
  • cordial,
  • hearty.
  •honorable
  • reputable.
  •loyal
  • faithful.
  •Other relevant words:
  • abandoned,
  • aboveboard,
  • abruptly,
  • absolutely,
  • absolve,
  • accurate,
  • active,
  • actually,
  • acute,
  • adequately,
  • adopt,
  • affect,
  • afire,
  • allegiance,
  • amplify,
  • amuse,
  • animated,
  • ardent,
  • assiduous,
  • assume,
  • attested,
  • believe,
  • benevolently,
  • bluff,
  • bluntly,
  • bona fide,
  • bound,
  • breathless,
  • brusque,
  • brutal,
  • burning,
  • businesslike,
  • candor,
  • catch,
  • childlike,
  • clear,
  • cleverly,
  • coin,
  • committed,
  • commonly,
  • complete,
  • completely,
  • condense,
  • condone,
  • confidence,
  • confiding,
  • consolidate,
  • consuming,
  • cordial,
  • correctly,
  • courteously,
  • credible,
  • dare,
  • dear,
  • decency,
  • decent,
  • decided,
  • decisive,
  • decorum,
  • dedicated,
  • dedication,
  • deep,
  • deep-rooted,
  • deepen,
  • definite,
  • definitely,
  • determined,
  • develop,
  • devoted,
  • devotion,
  • devout,
  • devoutly,
  • dexterously,
  • directly,
  • dishonest,
  • disingenuous,
  • disinterested,
  • dissemble,
  • divert,
  • dogged,
  • dramatic,
  • dynamic,
  • eager,
  • earnest,
  • earnestly,
  • echt,
  • effectively,
  • emotional,
  • En Deshabille,
  • energetic,
  • entertain,
  • enthusiastic,
  • entire,
  • entirely,
  • equitable,
  • evasive,
  • evident,
  • exactly,
  • exactness,
  • excellently,
  • existent,
  • expect,
  • explicit,
  • expressive,
  • extreme,
  • extremely,
  • fair,
  • fairly,
  • fairness,
  • faith,
  • faithful,
  • faithfulness,
  • faithless,
  • false,
  • fanatical,
  • faultlessly,
  • fealty,
  • fervent,
  • fervid,
  • fidelity,
  • fiery,
  • fine,
  • firm,
  • fitly,
  • flaming,
  • flatness,
  • forgive,
  • forthright,
  • frankness,
  • frantic,
  • fraudulent,
  • free,
  • free-spoken,
  • frenzied,
  • frequently,
  • friendly,
  • fully,
  • funds,
  • generally,
  • generous,
  • gentry,
  • genuinely,
  • gizzard,
  • glowing,
  • good,
  • goodly,
  • goodness,
  • graciously,
  • grave,
  • gravely,
  • great,
  • greatness,
  • guess,
  • guileless,
  • gushing,
  • handily,
  • hear,
  • heart-whole,
  • heartfelt,
  • hearty,
  • heated,
  • high-minded,
  • hollow,
  • honestly,
  • honesty,
  • honourable,
  • hot,
  • hot-blooded,
  • humanely,
  • impartial,
  • impassioned,
  • in earnest,
  • indeed,
  • indefatigable,
  • infer,
  • innocent,
  • integrity,
  • intense,
  • intent,
  • intent on,
  • interpret,
  • just,
  • justice,
  • justly,
  • keen,
  • kindly,
  • lawful,
  • learn,
  • legitimate,
  • level,
  • liege,
  • lifelike,
  • lily-white,
  • literal,
  • loyal,
  • loyalty,
  • mendacious,
  • mercifully,
  • modesty,
  • money,
  • moving,
  • native,
  • naturalistic,
  • no-nonsense,
  • obstinate,
  • obvious,
  • on fire,
  • openhearted,
  • ordinarily,
  • original,
  • out-and-out,
  • outspoken,
  • overpowering,
  • overwhelming,
  • passionate,
  • patent,
  • perfectly,
  • perfervid,
  • persevering,
  • persistent,
  • pertinacious,
  • pious,
  • piously,
  • place name,
  • plainspoken,
  • poignant,
  • politely,
  • presume,
  • principled,
  • profound,
  • proper,
  • properly,
  • propriety,
  • pure,
  • purely,
  • purposeful,
  • quite,
  • readily,
  • realistic,
  • reality,
  • really,
  • regular,
  • relentless,
  • reliable,
  • religiously,
  • reputable,
  • resolute,
  • resolved,
  • right,
  • righteous,
  • rightful,
  • rightly,
  • round,
  • saintly,
  • scrupulous,
  • sedate,
  • see,
  • serious,
  • seriously,
  • simple,
  • simple-minded,
  • sincerity,
  • single,
  • single-minded,
  • skillfully,
  • slowly,
  • sluggishly,
  • sober,
  • soberly,
  • sobersided,
  • solemn,
  • sooth,
  • soulful,
  • soundly,
  • spirited,
  • sportsmanlike,
  • square,
  • stainless,
  • stalwart,
  • stanch,
  • stark,
  • steady,
  • sterling,
  • stirring,
  • stomach,
  • stout,
  • straight,
  • straight-out,
  • strengthen,
  • strenuous,
  • suddenly,
  • sufficiently,
  • suppose,
  • sure-enough,
  • surmise,
  • suspect,
  • tactless,
  • tenacious,
  • thoroughly,
  • thoughtful,
  • tireless,
  • totally,
  • touching,
  • transparent,
  • true-blue,
  • truly,
  • trustful,
  • trusty,
  • truth,
  • truthfulness,
  • unabashed,
  • unadulterated,
  • unalloyed,
  • unambiguous,
  • unassuming,
  • unbiased,
  • unchecked,
  • uncolored,
  • uncomplicated,
  • unconcealed,
  • unconstrained,
  • uncontrived,
  • understand,
  • undiplomatic,
  • undistorted,
  • unelaborated,
  • unembellished,
  • unequivocal,
  • unfair,
  • unfeigned,
  • unflattering,
  • unguarded,
  • unimagined,
  • unimpressed,
  • uninfluenced,
  • uninhibited,
  • unmannered,
  • unmistakable,
  • unmitigated,
  • unprejudiced,
  • unpremeditated,
  • unpretentious,
  • unproblematic,
  • unqualified,
  • unreserved,
  • unrestricted,
  • unromantic,
  • unselfconscious,
  • unskillful,
  • unstilted,
  • unstinting,
  • unstudied,
  • unsuspicious,
  • untutored,
  • unvarnished,
  • unwary,
  • upfront,
  • upright,
  • upstanding,
  • usefully,
  • usually,
  • utter,
  • valid,
  • validly,
  • vastness,
  • vehement,
  • veracious,
  • verbal,
  • verbatim,
  • veridical,
  • verisimilar,
  • very,
  • vigorous,
  • virtuous,
  • virtuously,
  • warm,
  • white-hot,
  • whole-souled,
  • wholehearted,
  • wistful,
  • worthy,
  • zealous,
  • Forsworn,
  • Free-tongued,
  • Hollow-hearted,
  • Inartificial,
  • Lain,
  • Meant,
  • Open-hearted,
  • Simple-hearted,
  • Single-hearted,
  • Trothless,
  • True-hearted,
  • Truthless,
  • Undesigning,
  • Warm-hearted,
  • Simon-pure,
  • heart-to-heart,
  • red hot,
  • straight-from-the-shoulder,
  • unpretending,
  • word for word,
  • Consummately,
  • warmheartedly,
  • deeply felt,
  • even-handed,
  • unexaggerated,
  • simpleminded,
  • rely on,
  • straight-shooting,
  • dinkum,
  • card-carrying,
  • above-board,
  • Four-square,
  • Frank-hearted,
  • Unartificial,
  • Uncandid,
  • Unconcocted,
  • Undissembled,
  • Undissembling,
  • Unimitated,
  • Uningenuous,
  • Uninvented,
  • Unperjured,
  • Unspecious,
  • Unveracious,
  • plain-speaking,
  • unassumed,
  • naked,
  • uncalculated,
  • above reproach,
  • treat well,
  • boiling over,
  • above suspicion,
  • on the level,
  • have faith in,
  • in good faith,
  • straight forward,
  • unmistakeable,
  • unfanciful,
  • on the line,
  • on up and up,
  • pretensionless,
  • simplehearted,
  • unpretended,
  • up-front,
  • like it is,
  • born yesterday,
  • bound and determined,
  • ingenu,
  • unsimulated.

Antonyms for Sincere:

• adj.

  • all
    insincere.
  • straightforward, honest
    counterfeit, deceitful, devious, dishonest, false, flippant, insincere, invalid, tricky, trivial, unimportant, unreal, untrustworthy, unserious.
  • Other antonyms:
    adroit, affected, arch, artful, artificial, assuming, backhanded, bootlicking, buttery, calculating, canny, civilized, cosmopolitan, crafty, critical, crooked, cultivated, cultured, cunning, cynical, deceitful, deceptive, designing, devious, diplomatic, dishonest, dissembling, dissimulating, dissimulative, fake, false, fawning, feigned, flattering, forced, foxy, frivolous, fulsome, gilded, guileful, hypocritical, insincere, intriguing, knavish, knowing, left-handed, manipulative, mealy, mealymouthed, meretricious, mistrustful, obsequious, oily, oleaginous, phony, plausible, polished, pretentious, refined, scheming, sharp, shifty, shrewd, skeptical, slick, slippery, sly, smarmy, smooth, soapy, sophisticated, specious, strained, subtle, suspicious, sycophantic, toadyish, tricky, two-faced, unctuous, underhanded, wary, wily, worldly, worldly-wise.

• Other antonyms:

  • n. t.
    affected, arch, artful, artificial, assuming, backhanded, bootlicking, buttery, calculating, canny, civilized, cosmopolitan, counterfeit, crafty, critical, crooked, cultivated, cultured, cunning, cynical, deceitful, deceptive, designing, devious, dishonest, dishonorable, disingenuous, dissembling, dissimulating, dissimulative, fake, false, fawning, feigned, flattering, flippant, forced, foxy, fulsome, gilded, guileful, hollow, hypocritical, imitative, insincere, invalid, manipulative, mealy, mealymouthed, meretricious, mistrustful, obsequious, oily, oleaginous, perfunctory, phony, plausible, polished, pretended, pretentious, scheming, sharp, shifty, shrewd, skeptical, slick, slippery, sly, smarmy, smooth, soapy, sophisticated, specious, strained, subtle, suspicious, sycophantic, synthetic, toadyish, token, tricky, trivial, two-faced, unctuous, underhanded, unimportant, unreal, untrustworthy, wary, wily, worldly, worldly-wise, put on, unserious, double-dealing, phoney or phony.