kidultPronunciation: /ˈkɪdʌlt/Definition of kidult noun informal an adult with childish tastes. [mass noun, often as modifier] a genre of television programmes, films, or games intended to appeal to both children and adults:high-tech kidult entertainmentOrigin: 1960s: blend of kid1 and adultkidult in other Oxford dictionaries Definition of kidult in the US English dictionary