苦心惨憺 くしんさんたん Also written 苦心惨澹 Meanings Noun, する verb, Intransitive taking great pains Kanji 苦 suffer. Read as ク. 心 heart. Read as シン. 惨 wretched. Read as サン. 憺 calm; quiet; move. Read as タン. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists