pre-noun adjectival
Formal or literary pre-noun modifier used before nouns referring to people who have passed away, such as 父, 母, 妻, 夫, 人. Conveys a respectful, somewhat solemn tone.
亡き父の遺志を継いで、医者になりました。
Following the wishes of my late father, I became a doctor.
亡き妻との思い出を大切にしている。
I cherish the memories of my departed wife.