- 坚持不懈 jiānchíbùxiè unremitting(idiom) to persevere unremittingly; to keep going until the end; persistent
- 常备不懈 chángbèibùxiè to be always on alertto be constantly prepared and never relax one's guard
- 不懈怠 bùxièdài untiringrelentless; tireless; without slacking off; persistently
- 夙夜不懈 sùyèbùxiè to work hard day and nightto be diligent and tireless day and night; to work hard around the clock without slacking
