completely exhausted; until completely softUsed adverbially to describe being utterly worn out, or cooking something until it becomes very soft. In everyday speech, it is especially common in くたくたに疲れる, meaning “to be completely exhausted.”
JA: 仕事の後、くたくたに疲れて何もしたくなかった。
EN: After work, I was completely exhausted and didn't want to do anything.