• 祖そ

  ancestor, forefather, progenitor

• 祖先そせん

  ancestor

• 祖母そぼ

  grandmother

• 祖国そこく

  homeland, motherland, fatherland, native country

• 祖父そふ

  grandfather

• 教祖きょうそ

  founder of a religious sect

• 宗祖しゅうそ

  sect founder

• 元祖がんそ

  originator, pioneer, inventor, founder

• 先祖せんぞ

  ancestor, forefather, foremother

• 祖父母そふぼ

  grandparents

• お祖母さんおばあさん

  grandmother

• お祖父さんおじいさん

  grandfather

• 祖宗そそう

  ancestors

• 祖型そけい

  prototype

• 祖師そし

  founder of a sect

• 祖語そご

  protolanguage, parent language

• 祖神そしん

  ancestor worshipped as a deity

• 祖業そぎょう

  business started by an ancestor, inherited business

• 祖廟そびょう

  mausoleum containing the remains of one's ancestors

• 祖述そじゅつ

  exposition (propagation) of one's master's teachings or doctrines

• 祖霊それい

  ancestral spirit, collective of ancestral spirits which have lost their individualities

• 父祖ふそ

  ancestors

• 遠祖えんそ

  remote ancestor, forefather

• 開祖かいそ

  (sect) founder, apostle, originator, inventor

• 始祖しそ

  founder, originator, pioneer

• 媽祖まそ

  Mazu (Chinese goddess of the sea)

• 人祖じんそ

  progenitor

• 藩祖はんそ

  ancestor of a feudal lord

• 真祖しんそ

  (in fiction) person changed into a vampire by magic

• 名祖なおや

  eponym (person after whom something is named)

• 太祖たいそ

  founder, progenitor, emperor

• 天祖てんそ

  the ancestral Sun Goddess

• 高祖こうそ

  founder of dynasty or sect

• 同祖どうそ

  common ancestor

• 鼻祖びそ

  founder, originator, introducer

• 仏祖ぶっそ

  Founder of Buddhism

• 皇祖こうそ

  (divine, historical or legendary) founder of an empire

• 祖国愛そこくあい

  patriotism

• 祖師禅そしぜん

  Zen Buddhism based on the teachings of Bodhidharma

• 祖霊舎それいしゃ

  shrine for worshiping the spirits of ancestors

• 高祖父こうそふ

  great-great-grandfather

• 高祖母こうそぼ

  great-great-grandmother

• 義祖父ぎそふ

  grandfather-in-law

• 曾祖父そうそふ

  great-grandfather, great-granddad, great-grandad

• 亡祖父ぼうそふ

  deceased grandfather, (one's) late grandfather

• 義祖母ぎそぼ

  grandmother-in-law

• 道祖神どうそじん

  traveler's guardian deity (traveller)

• 外祖母がいそぼ

  maternal grandmother

• 皇祖妣こうそひ

  deceased grandmother of the emperor

• 皇祖考こうそこう

  deceased grandfather of the emperor