indefatigable
/ˌɪndɪˈfætɪgəbl/adjective
- (of a person or their efforts) persisting tirelessly（人, 努力）坚持不懈的, 不屈不挠的：
an indefatigable defender of human rights.
不屈不挠的人权捍卫者。
派生词
indefatigability
nounindefatigably
adverb词源
early 17th cent.: from French, or from Latin indefatigabilis, from in- 'not' + de- 'away, completely' + fatigare 'wear out'.