uncertainadjective/ĩˈsɛɾtu/highin·cer·toPortuguesEnglishEspanolFrancaisDefinitionNot able to be relied on; not known or definite.The outcome of the negotiations is uncertain.She felt uncertain about her decision.syndoubtfulunsureindefiniteantcertainsuredefiniteCommon collocationsuncertain futureuncertain outcomeuncertain timesEtymologyDo latim 'incertus'.Related wordsincertezaincertamenteincertificar