不屈不撓 ふくつふとう Meanings Noun indefatigability; indomitableness; with unremitting tenacity Kanji 不 un-. Read as フ. 屈 bend. Read as クツ. 撓 bend; train; lithe. Read as トウ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists