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Definitions

certification

[sur-tuh-fi-key-shuhn, ser-tif-uh-] / ˌsɜr tə fɪˈkeɪ ʃən, sərˌtɪf ə- /
NOUN
admission
Synonyms
STRONGEST
acceptance access admittance confirmation entrance introduction recognition
STRONG
designation door entree entrée ingress initiation permission reception way welcome
Antonyms
STRONGEST
conclusion
STRONG
prohibition
WEAK
denial disallowance exclusion expulsion refusal repudiation
NOUN
affirmation
Synonyms
STRONGEST
assertion confirmation
STRONG
affidavit asseveration attestation averment avouchment avowal declaration oath okay pronouncement ratification statement testimonial testimony
WEAK
green light stamp of approval sworn statement
Antonyms
STRONGEST
denial
WEAK
negation nullification veto
NOUN
appointment
Synonyms
STRONGEST
approval choice designation election nomination selection
STRONG
allotment assigning authorization commissioning delegation deputation installation naming ordination promotion
WEAK
choosing empowering
Antonyms
STRONGEST
refusal rejection
NOUN
authentication
Synonyms
STRONGEST
verification
STRONG
attestation corroboration evidence proof substantiation testament testimonial testimony validation
NOUN
certificate
Synonyms
STRONGEST
affidavit authentication authorization coupon credential deed diploma documentation guarantee license paper permit receipt ticket voucher warrant warranty
STRONG
affirmation attestation docket endorsement pass record sheepskin shingle testament testimonial testimony
WEAK
testification
Antonyms
STRONGEST
breach break prohibition
STRONG
denial veto
NOUN
discovery
Synonyms
STRONGEST
analysis detection diagnosis disclosure encounter exploration introduction revelation sighting
STRONG
authentication calculation determination discernment empiricism espial experimentation exposition exposure feeling hearing identification invention learning locating location origination perception sensing strike verification
WEAK
ascertainment distinguishing unearthing
Antonyms
STRONGEST
secret
WEAK
loss miss
NOUN
guarantee
Synonyms
STRONGEST
agreement assurance certificate collateral contract deposit insurance security warranty
STRONG
attestation bail bargain bond certainty charter covenant earnest gage guaranty lock oath pawn pipe recognizance surety testament token undertaking vow warrant word
WEAK
sure thing word of honor
Antonyms
STRONGEST
disagreement uncertainty
STRONG
breach break
NOUN
guaranty
Synonyms
STRONG
attestation guarantee pledge promise
Antonyms
STRONG
break
NOUN
hallmark
Synonyms
STRONGEST
indication trademark
STRONG
badge device emblem endorsement mark ratification seal sign signet stamp
WEAK
sure sign telltale sign
Antonyms
STRONG
disapproval
NOUN
ingression
Synonyms
WEAK
acceptance access admittance confirmation designation door entrance entree entrée ingress initiation introduction intromission permission reception recognition way welcome
NOUN
intromission
Synonyms
STRONG
acceptance access admittance confirmation designation door entrance entree entrée ingress initiation introduction permission reception recognition way welcome
WEAK
ingression
Antonyms
STRONG
conclusion denial end ending finish prohibition veto
NOUN
paper/papers
Synonyms
WEAK
ID affidavit archive bill certificate citation contract credentials data deed diaries diploma documentation dossier file grant identification papers indictment instrument letter letters order passport plea record subpoena summons testimony token visa voucher warrant will writ writings
NOUN
papers
Synonyms
STRONG
ID affidavit archive bill certificate citation contract credentials data deed diaries diploma documentation dossier file grant indictment instrument letters order passport plea record subpoena summons testimony token visa voucher warrant will writings
WEAK
identification papers
Antonyms
STRONG
answer loss
NOUN
proof
Synonyms
STRONGEST
argument clue confirmation criterion data demonstration information picture reason testament testimony validation verification
STRONG
affidavit attestation averment case clincher corroboration credentials cue deposition documents establishment exhibit facts goods grabber grounds nitty-gritty reasons record scoop score skinny substantiation trace warrant wherefore why witness
WEAK
chapter and verse lowdown paper trail smoking gun straight stuff whyfor
Antonyms
WEAK
hypothesis theory
NOUN
reference
Synonyms
STRONGEST
character endorsement recommendation tribute
STRONG
certificate credentials
WEAK
good word
Antonyms
STRONGEST
disapproval
NOUN
registration
Synonyms
STRONGEST
booking enrollment filing listing
STRONG
matriculation recording
WEAK
authorizing cataloging enrolling keeping records notarization signing up

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Joby doesn’t generate sales yet and trades largely on news flow related to aircraft certification and the start of commercial service in the Middle East.

From Barron's • Apr. 27, 2026

Soon, Beatnix got her yoga certification and a couple of her goth friends, Sal Santoro and Popi Mavros, offered the backroom of their Burbank-based occult store, the Crooked Path.

From Los Angeles Times • Apr. 27, 2026

He ended up at Portland Community College, where he was assigned a local technician from Horizon Air, a regional airline owned by Alaska Air Group, to help him study for his certification.

From The Wall Street Journal • Apr. 26, 2026

But Kearney eventually came back to her magnet school, Julia R. Masterman Laboratory and Demonstration, after community fundraising efforts and her secondary teaching certification in English paved the way for her return.

From Salon • Apr. 26, 2026

"It is just the usual certification of sanity, signed by Doctor Sikes," the judge replied as she removed the envelope from her files.

From "The Westing Game" by Ellen Raskin

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