一筋縄でいかない ひとすじなわでいかない Also written 一筋縄で行かない Meanings Expression, い-adjective not straightforward; not dealt with by ordinary means; very hard to manage See also: 一筋縄ではいかない (ひとすじなわではいかない). Kanji 一 one. Read as ひと. 筋 muscle. Read as すじ. 縄 rope. Read as なわ. Jinuma: Japanese Dictionary · Word lists