The antonyms have distinct nuances: *Reasonableness* conveys fairness, sensibility, and logic, while *sanity* refers to the state of having a healthy and sound mind. Use these words to enhance communication, show empathy in conversations, and enrich writing by creating a more balanced and nuanced perspective.

급여 인상에 대한 회사의 결정은 직원들의 *합리성*과 감사를 받았습니다.

給与を引き上げるという会社の決定は、従業員からの*合理性*と感謝で満たされました。

The company's decision to increase salaries was met with *reasonableness* and appreciation from its employees.

치료를 받은 후 그는 *제정신*을 되찾고 더 나은 결정을 내리기 시작했습니다.

治療を求めた後、彼は*正気*を取り戻し、より良い決定を下し始めました。

After seeking therapy, he regained his *sanity* and started making better decisions.