This is the 3302nd most frequent Japanese word.
息災
"息災" means health, safety, or being free from illness or harm.
In this sentence, "息災" refers to someone's state of being healthy and unharmed, used in the context of personal well-being.
彼の健康が息災であることを知って安心しました。
I was relieved to know that he is in good health.
Here, "息災" is used more generally to describe a peaceful and unharmed lifestyle, often implying prosperity or harmony in community living.
田舎では人々が息災に暮らしているらしい。
It seems that people in the countryside are living peacefully and unharmed.
In this sentence, "息災" is employed in a heartfelt, wishful expression, emphasizing the importance of well-being and safety for loved ones.