WordessencialMeaningessentialPart of speechadjectivePronunciationCoursePortuguese (Portugal)LessonSubjunctive with impersonal expressions (é bom que...)Usages of essencialÉ essencial que o mar esteja limpo.It's essential that the sea be clean.É essencial que o plástico não fique no mar.It's essential that the plastic doesn't stay in the sea.