With the energy or courage regarded as characteristic of a girl.
Late 19th century; earliest use found in Joseph Ashby-Sterry (1838–1917). From girl + -ful + -ly, after manfully.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。