jiān​kǔ​zhuó​jué

utmost fortitude

Senses

坚苦卓绝/ 堅苦卓絕 jiān​kǔ​zhuó​jué utmost fortitude

showing extreme persistence and determination despite trials and tribulations; having a level of perseverance that surpasses the ordinary

References

see 坚苦卓绝/堅苦卓絕 艰苦卓绝/艱苦卓絕
synonym 艰苦卓绝/艱苦卓絕 坚苦卓绝/堅苦卓絕