知らぬは亭主ばかりなり しらぬはていしゅばかりなり Also written 知らぬは亭主許り也 Meanings Expression the husband is always the last to know; everyone knows of the wife's infidelity but the cuckolded husband Kanji 知 know. Read as しる. 亭 pavilion. Read as テイ. 主 main. Read as シュ. Word lists Idioms Jinuma: Japanese Dictionary · Word lists