• 父ちち — father
• お父さんおとうさん — father (polite/familiar)
• 父親ちちおや — father (formal)
• 祖父そふ — grandfather
• 父母ふぼ — parents / father and mother
• 義父ぎふ — father-in-law / foster father
• 神父しんぷ — priest (Catholic)
• 父兄ふけい — parents and older siblings / guardians
• 漁父の利ぎょふのり — advantage gained by a third party

This character began as a pictograph of a hand holding a tool, symbolizing the father as protector or provider. It is a common base for family-related words in Japanese.