1. A subject, topic, or motif that is prohibited, forbidden, or not accepted in a particular context, such as academic work, content policies, artistic competitions, or organizational guidelines
The disallowed theme for this year's art competition is political propaganda.
O tema não permitido para o concurso de arte deste ano é propaganda política.
2. In literature or creative writing, a narrative element or subject matter that violates established rules or censorship guidelines
Violence and explicit content were disallowed themes in the children's book manuscript.
Violência e conteúdo explícito foram temas não permitidos no manuscrito do livro infantil.