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.
Following my late father's will, I decided to take over the family business.
I still treasure the fountain pen my late father used to love.
Compound of 亡き (なき, 'deceased', archaic attributive form of 亡し) and 父 (ちち, 'father').