意い思し能のう力りょく

noun

mental capacity

Legal term referring to a person's ability to understand and make decisions, especially regarding contracts and legal acts.

• 意い思し能のう力りょくがないと判はん断だんされた場ば合あい、契けい約やくは無む効こうになります。

  If a person is judged to lack mental capacity, the contract becomes void.