百折不撓 ひゃくせつふとう Meanings Noun indefatigability; indomitableness Kanji 百 hundred. Read as ヒャク. 折 fold. Read as セツ. 不 un- 撓 bend; train; lithe. Read as トウ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists