思案投首 しあんなげくび Also written 思案投げ首 Meanings Noun being at one's wit's end; being (quite) at a loss (what to do) Kanji 思 think. Read as シ. 案 plan. Read as アン. 投 throw. Read as なげる. 首 neck. Read as くび. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists