conclusiveness

1. He has obtained outstanding achievements in many areas, especially showing his conclusiveness, maturity and innovation in his study of Marxist ethnic theory and various ethnic issues in today's China.
   他在诸多领域都取得了卓越的成就，最主要的是在对马克思主义民族理论和当代中国民族问题的研究方面，表现出了总结性、成熟性和创新性三个特点。

noun

1. the quality of being final or definitely settled
   1. the finality of death

   Synonym:    finalitydecisiveness