THEORY Antonyms There are 10 antonyms of the word theory. (opposite meanings)Did you mean?Definition of THEORYSynonyms of THEORYAlso try opposite words for..theorisetheoristtheoreticaltheoreticiantheorizationBest Opposite Words For THEORYTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1actualitynounn2certaintynounn3evidencenounn4existencenounn5factnounn6knowledgenounn7proofnounn8realitynounn9truthnounn10veritynounn Alternatives for ACTUALITY Words (3)factrealitytruthOpposite words for actuality Alternatives for CERTAINTY Words (15)surenessassuranceconclusivenessconfidenceconvictiondecisivenessdefinitenessdeterminationfirmnesspositivityreliabilitysafetysecuritysuretycertitudePhrases (2)sure thingforegone conclusionOpposite words for certainty Alternatives for EVIDENCE Words (24)attestationclueconfirmationcorroborationdemonstrationdocumentationexhibitillustrationindicationmanifestationproofsignsubstantiationtestimonyverificationattestcertifydemonstrategroundsmanifestproveshowtelltestifyPhrases (1)bear witnessOpposite words for evidence Alternatives for EXISTENCE Words (14)presencebeingactualityentitylifeoccurrencerealitysubsistencebeingnesscosmoscreationmacrocosmuniverseworldPhrases (1)face of the earthOpposite words for existence Alternatives for FACT Words (10)accuracyactualityauthenticitycertaintycertitudegenuinenessrealitysuretytruthverityOpposite words for fact Alternatives for KNOWLEDGE Words (22)awarenesscognitionlearningacquaintancecomprehensionconsciousnesseducationenlightenmenteruditionexpertisefamiliarityinformationinsightintelligenceproficiencyscholarshipunderstandingwisdomcognizancekenknowingnessnoesisOpposite words for knowledge Alternatives for PROOF Words (10)substantiationvalidationattestationconfirmationcorroborationevidencesupporttestimonyverificationproofreadPhrases (3)cogent evidencetest copytrial impressionOpposite words for proof Alternatives for REALITY Words (5)actualityrealismrealnesstruthworldOpposite words for reality