lineal
🇺🇸
/ˈlɪniəl/
🇬🇧
/ˈlɪniəl/
adjective
R
related in a direct family line, such as parent to child or grandparent to grandchild.
He is a lineal successor to his grandfather's estate.
彼は祖父の財産の直系の後継者です。
translation
直系の