putting a lot of hard work and energy into something over a long period of time synonym indefatigable不知疲倦的;不觉疲劳的;精力充沛的 a tireless campaigner for human rights 不屈不挠的人权运动参与者 to have tireless energy 精力充沛 She was tireless in her efforts on our behalf. 她为我们不懈努力。
Oxford Collocations DictionaryTireless is used with these nouns:- advocate
- campaigner
- effort
- …