i-adjective
fatherly; paternal
Describes behavior, attitude, or qualities typical of a father: protective, caring, or authoritative in a father-like way.
彼の子供への接し方はとても父親らしい。
His way of interacting with his children is very fatherly.
父親らしいアドバイスをくれてありがとう。
Thank you for the fatherly advice.