trenchant
adjective formal uk/ˈtren.tʃənt/ us/ˈtren.tʃənt/
（批评或意见）尖锐的，尖刻的，犀利的
severe, expressing strong criticism or forceful opinions
His most trenchant criticism is reserved for the party leader, whom he describes as "the most incompetent and ineffectual the party has known". 他对该党的领导人进行了最为尖锐的批评，称他是“该党有史以来最平庸、最无能的人”。
Dorothy Parker's writing is characterized by a trenchant wit and sophistication. 多萝西‧帕克的作品的特点是睿智、老练。