rust·i·ness英'rʌstɪnɪs美'rʌstɪnɪsCOCA¹⁸⁵⁹⁵¹BNC⁹¹⁵¹⁷⁺⁸iWeb⁵⁹²⁵⁵ 基本英英搭配记法 n.生金秀³³;声音沙哑⁶⁷ Noun: the condition of being coated or clogged with rustineptitude or awkwardness as a consequence of age or lack of practice;
his rustiness showed when he was asked to speed up