also: ててご
noun
A respectful term for someone else's father. Somewhat old-fashioned; お父様 (おとうさま) is more common in modern polite speech.
お父御はお元気ですか。
How is your father?
彼の父御は医者だそうだ。
I hear his father is a doctor.
Compound of 父 (ちち, 'father') and honorific suffix 御 (ご). The reading ててご is an older variant.