2 文書を見つけるための辞書。

• ancestor, root, antecedent, ascendant, ascendent
• 祖, 高祖, 先祖, 始祖, ルーツ, 曩祖, 先つ祖, 先世, 祖先, 先人, 御祖, 世祖
• someone from whom you are descended (but usually more remote than a grandparent)
• 自分が系統を引く（通常、祖父母よりも遠い）人

• pioneer
• 先達, 始祖, 先駆, 開拓者, 先人, 先覚, 先駆者, パイオニア
• one the first colonists or settlers in a new territory; "they went west as pioneers with only the possessions they could carry with them"
• 新しい領土の最初の移住民あるいは移住者の一人