indefatigable

indefatigable
[ˌɪndɪˈfatɪgəb(ə)l]
adjective
  1. (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
indefatigability
noun
indefatigably
adverb
语源
  1. early 17th cent.: from French, or from Latin indefatigabilis, from in- 'not' + de- 'away, completely' + fatigare 'wear out'
英语宝典
考试词汇表