不履行 ふりこう Meanings Noun default; nonperformance Kanji 不 un-. Read as フ. 履 tread 行 go. Read as コウ. Words containing 不履行 債務不履行 (さいむふりこう) default on a debt 契約不履行 (けいやくふりこう) nonfulfillment of a contract Jinuma: Japanese Dictionary · Word lists