Synonyms for Certify:

• n.

  •
  • accredit,
  • commit,
  • confine,
  • cure,
  • diagnose,
  • doctor,
  • examine,
  • caseload.
  •
  • swear,
  • vouch for.
  •
  • downgrade,
  • fail,
  • flunk,
  • grade,
  • graduate,
  • guaranty,
  • mark,
  • obligation,
  • pass,
  • promote,
  • track.
  •certify (noun)
  • attest,
  • demonstrate,
  • endorse,
  • evidence,
  • licence,
  • license,
  • manifest.

• v.

  •affirm (verb)
  • accept,
  • acknowledge,
  • adjure,
  • admit,
  • affirm,
  • approve,
  • assert,
  • assure,
  • attest,
  • aver,
  • avouch,
  • claim,
  • contend,
  • corroborate,
  • declare,
  • endorse,
  • express,
  • maintain,
  • pledge,
  • proclaim,
  • profess,
  • promise,
  • pronounce,
  • propound,
  • ratify,
  • set down,
  • state,
  • submit,
  • support,
  • sustain,
  • testify,
  • validate,
  • verify,
  • warrant.
  •approve (verb)
  • approbate,
  • assent,
  • authenticate,
  • authorize,
  • confirm,
  • consent,
  • permit,
  • sanction,
  • underwrite.
  •ascertain (verb)
  • ascertain,
  • audit,
  • check,
  • find out.
  •authorize (verb)
  • agree,
  • bless,
  • commission,
  • countersign,
  • denominate,
  • deputize,
  • designate,
  • empower,
  • enable,
  • enfranchise,
  • entitle,
  • license,
  • notarize,
  • ordain.
  •declare as true (verb)
  • accredit,
  • approve,
  • ascertain,
  • assure,
  • attest,
  • authenticate,
  • authorize,
  • aver,
  • avow,
  • commission,
  • confirm,
  • corroborate,
  • endorse,
  • guarantee,
  • license,
  • notify,
  • okay,
  • profess,
  • reassure,
  • sanction,
  • show,
  • state,
  • swear,
  • testify,
  • validate,
  • verify,
  • vouch,
  • witness.
  •evince (verb)
  • adduce,
  • betoken,
  • connote,
  • demonstrate,
  • depose,
  • determine,
  • document,
  • establish,
  • evince,
  • exemplify,
  • exhibit,
  • illustrate,
  • indicate,
  • manifest,
  • observe,
  • prove,
  • substantiate,
  • vouch,
  • witness.
  •guarantee (verb)
  • bond,
  • ensure,
  • guarantee,
  • insure,
  • safeguard,
  • secure.
  •prove (verb)
  • ascertain,
  • confirm,
  • demonstrate,
  • determine,
  • establish,
  • prove,
  • verify.

• Other synonyms:

  •
  • accredit,
  • allow,
  • diagnose,
  • internship,
  • nurse,
  • reinforce,
  • caseload.
  •
  • commit,
  • confine,
  • cure,
  • examine,
  • prescribe,
  • press,
  • prognosis,
  • readmit,
  • satisfy.
  •
  • back up,
  • doctor,
  • practice,
  • treat.
  •
  • guaranty.
  •affirm
  • predicate.
  •approve
  • permit,
  • second.
  •authorize
  • license.
  •guarantee
  • cosign,
  • sign for.
  •okay
  • consent to.
  •promise
  • assure.
  •Other relevant words:
  • accredit,
  • affirmation,
  • allege,
  • allow,
  • allowable,
  • amen,
  • answer for,
  • appoint,
  • argue,
  • assertion,
  • asseverate,
  • assign,
  • assurance,
  • attestation,
  • attester,
  • attribute,
  • authenticated,
  • authorise,
  • authoritative,
  • authorization,
  • autograph,
  • averment,
  • avow,
  • back,
  • back up,
  • bear out,
  • bear witness,
  • bolster,
  • book,
  • buttress,
  • certificate,
  • certification,
  • certified,
  • charter,
  • check over,
  • check up on,
  • choose,
  • chronicle,
  • cinch,
  • circumstantiate,
  • classify,
  • clear up,
  • clench,
  • clinch,
  • clue,
  • collate,
  • commit,
  • competent,
  • concede,
  • condition,
  • confess,
  • confine,
  • confirmation,
  • corroboration,
  • cosign,
  • cross-check,
  • cure,
  • decide,
  • delegate,
  • demo,
  • depone,
  • depute,
  • describe,
  • designation,
  • detail,
  • diagnose,
  • disclose,
  • doctor,
  • downgrade,
  • effect,
  • elect,
  • eligible,
  • emblem,
  • endorsement,
  • equip,
  • evidence,
  • examine,
  • experimental,
  • fail,
  • fit,
  • fix,
  • flunk,
  • fortify,
  • franchise,
  • gesture,
  • get at,
  • grade,
  • graduate,
  • grant,
  • guaranty,
  • hallmark,
  • index,
  • indication,
  • indorse,
  • initial,
  • internship,
  • invest,
  • irrefutable,
  • justification,
  • legal,
  • legalize,
  • legitimate,
  • legitimatize,
  • legitimize,
  • let,
  • licence,
  • licensed,
  • make,
  • make good,
  • make sure,
  • march,
  • mark,
  • medical,
  • moderate,
  • motion,
  • nail down,
  • name,
  • notify,
  • nurse,
  • obligation,
  • offer,
  • okay,
  • own,
  • particularize,
  • pass,
  • pass on,
  • patent,
  • plump for,
  • plunk for,
  • portent,
  • practice,
  • predicate,
  • prepare,
  • prescribe,
  • present,
  • press,
  • privilege,
  • privileged,
  • probate,
  • prognosis,
  • promote,
  • protest,
  • proven,
  • provide for,
  • put away,
  • qualify,
  • quantifiable,
  • readmit,
  • ready,
  • reassure,
  • recognize,
  • record,
  • reinforce,
  • restrict,
  • rubber stamp,
  • satisfy,
  • say,
  • scientific,
  • seal,
  • second,
  • see,
  • see to it,
  • select,
  • settle,
  • shew,
  • show,
  • sign,
  • signal,
  • signboard,
  • sort out,
  • specify,
  • sponsor,
  • stabilize,
  • stamp,
  • statement,
  • strengthen,
  • subscribe to,
  • substantiation,
  • swear,
  • symptom,
  • take the stand,
  • tell,
  • testimony,
  • track,
  • treat,
  • undergird,
  • undersign,
  • undertake,
  • uphold,
  • valid,
  • validation,
  • vest,
  • vested,
  • vindicate,
  • vindication,
  • visa,
  • vise,
  • vote,
  • voucher,
  • vouchsafe,
  • vow,
  • warranty,
  • wave,
  • well-founded,
  • Certifying,
  • Countersecure,
  • Prover,
  • caseload,
  • recheck,
  • make sure of,
  • stand behind,
  • stand up for,
  • sign for,
  • swear to,
  • consent to,
  • give permission,
  • be certain,
  • be sure,
  • approve of,
  • without fail,
  • bear testimony,
  • kiss the Book,
  • make certain,
  • bear witness to,
  • vouch for,
  • set at rest,
  • take one's oath,
  • attest to,
  • be answerable for,
  • be behind,
  • be confident of,
  • give evidence,
  • give one's word,
  • give power,
  • give the go-ahead,
  • give thumbs up,
  • make an affidavit,
  • make eligible,
  • pass upon,
  • say amen to,
  • sign and seal,
  • testify to,
  • assert under oath.

Antonyms for Certify:

• Other antonyms:

  • n. t.
    ban, bar, block, challenge, conceal, constrain, contest, contradict, counteract, decertify, deny, derecognise, derecognize, disallow, disapprove, disavow, disbar, disclaim, discourage, discredit, disenfranchise, disfranchise, disprove, dispute, disqualify, enjoin, exclude, hide, hinder, hold back, impede, inhibit, interdict, invalidate, obstruct, oppose, outlaw, prevent, prohibit, proscribe, rebut, refuse, refute, reject, renounce, repudiate, shut out, stop.

• v.

  • declare as true
    conceal, contradict, counteract, deny, disallow, disapprove, disavow, disclaim, discredit, disprove, hide, invalidate, oppose, refuse, refute, reject, renounce, repudiate, veto.
  • Other antonyms:
    ban, bar, block, challenge, cloak, conceal, constrain, contest, contradict, cover, decertify, deny, derecognise, derecognize, disallow, disavow, disbar, disclaim, discourage, disenfranchise, disfranchise, disguise, disown, disprove, dispute, disqualify, dissemble, dissimulate, enjoin, exclude, forbid, gainsay, hide, hinder, hold back, impede, inhibit, interdict, mask, obstruct, outlaw, prevent, prohibit, proscribe, question, rebut, refute, repudiate, screen, secrete, shut out, stop, veil, veto.