dubietyPronunciation: /djuːˈbʌɪɪti/Definition of dubiety noun [mass noun] formal the state or quality of being doubtful; uncertainty:his enemies made much of the dubiety of his paternityOrigin: mid 18th century: from late Latin dubietas, from Latin dubium 'a doubt'dubiety in other Oxford dictionaries Definition of dubiety in the US English dictionary