WordpreocupanteMeaningconcerningPart of speechadjectivePronunciationCourseSpanish (Latin America)LessonThe abstract "lo" (lo + adjective)Usages of preocupanteLo preocupante aquí es tu astigmatismo.The concerning thing here is your astigmatism.Capaz que el diagnóstico del astigmatismo es preocupante.The diagnosis of the astigmatism might be concerning.