Humble term used to refer to one's own father when speaking to someone outside the family. Not used to address one's own father directly; for that, お父さん (おとうさん) is common. Compare with 母 (はは) for 'mother'.
See also: 母 (はは)
My father is an office worker.
My father's hobby is fishing.
He resembles his father in both looks and personality.
She lost her father when she was ten.
父 is the neutral, formal word for one's father used in polite or written contexts, while 親父 is the rough, familiar term mainly used by men in casual speech.
父ちゃん is an affectionate home word for dad, while 父 is the humble, formal term used when referring to one's own father to outsiders.
父 is the humble term used when referring to one's own father in formal or outward-facing speech, whereas お父様 is used respectfully of someone else's (or occasionally one's own) father.
父 is the humble term used for one's own father in formal speech or with outsiders, whereas 父さん is a warm, casual term used within the family.
父 is the modest, formal way to refer to one's own father when speaking to outsiders, whereas パパ is the affectionate word used at home.
(another's respected) father