SPECULATION Antonyms There are 10 antonyms of the word speculation. (opposite meanings)Did you mean?Definition of SPECULATIONSynonyms of SPECULATIONAlso try opposite words for..speculatespeculatedspeculatingspeculatorsBest Opposite Words For SPECULATIONTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1assurancenounn2certaintynounn3confirmationnounn4evidencenounn5factnounn6knowledgenounn7proofnounn8realitynounn9surenessnounn10truthnounn Alternatives for ASSURANCE Words (15)confidenceself-assurancesurenessbeliefcertaintyconvictionfaithguaranteehopepoisesecuritytrustauthoritypledgeself-confidenceOpposite words for assurance Alternatives for CERTAINTY Words (15)surenessassuranceconclusivenessconfidenceconvictiondecisivenessdefinitenessdeterminationfirmnesspositivityreliabilitysafetysecuritysuretycertitudePhrases (2)sure thingforegone conclusionOpposite words for certainty Alternatives for CONFIRMATION Words (13)verificationaffirmationapprovalattestationauthenticationcorroborationendorsementevidencetestimonyvalidationcheckratificationsubstantiationOpposite words for confirmation Alternatives for EVIDENCE Words (24)attestationclueconfirmationcorroborationdemonstrationdocumentationexhibitillustrationindicationmanifestationproofsignsubstantiationtestimonyverificationattestcertifydemonstrategroundsmanifestproveshowtelltestifyPhrases (1)bear witnessOpposite words for evidence 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