noun
late father; one's deceased father
Used when referring to one's own father who has passed away. Often appears in formal or written contexts.
亡き父の遺言に従って、家業を継ぐことにした。
Following my late father's will, I decided to take over the family business.
亡き父が愛用していた万年筆を今も大切にしている。
I still treasure the fountain pen my late father used to love.