1. relating to or having the characteristics of a family

- children of the same familial background

- familial aggregation

2. occurring among members of a family usually by heredity

- familial traits

Similar word(s): heritable, inheritable, genetic, hereditary, inherited, transmissible, transmitted

Sentences with familial as an adjective:

- Mark had to leave work due to familial obligations.

- For Apocynaceae, this type of flower is a familial characteristic.