This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or relating to a family.

adj. Occurring or tending to occur among members of a family, usually by heredity: familial traits; familial disease.

adj. Of or pertaining to human family.

adj. Of or pertaining to any grouping of things referred to as a family.

adj. relating to or having the characteristics of a family.

adj. tending to occur among members of a family, usually by hereditary transmission.

Occurring in members of the same family, though not necessarily hereditary: said of certain diseases, especially of the nervous system.

As in a family; family-like.

adj. occurring among members of a family usually by heredity

adj. relating to or having the characteristics of a family

"The risk of gastrointestinal carcinoma in familial juvenile polyposis."

heritable    inheritable   

genetic    hereditary    inherited    transmitted    transmissible   

thoracoabdominal    ethnic    autosomal    filial    basilar    marital    interpersonal    ovarian    atherosclerotic    degenerative