mettlesome

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++met·tle·some /ˈmetlsəm/ adjective literary  ENERGETICDETERMINEDfull of energy and determination 精力充沛的；刚毅的

met·tle·some adjectiveChineseSyllable  

mettlesome
met‧tle‧some /ˈmetlsəm/ adjective literary
full of energy and determination