Fraternalism is an important aspect of our organization.

Fraternalisms promote unity and cooperation among members.

The fraternals organized a charity event to raise funds for the local community.

Sexual fraternization is strictly prohibited in the workplace.

My fraternal nephew is coming to visit me next week.

My fraternal niece is coming to visit me next week.

My sister has two fraternal nieces.

My brother has two fraternal nephews.

The fraternal birth-order effect suggests that the more older brothers a man has, the greater the likelihood he will be gay.

The fraternal birth order effect is a phenomenon in which the more older brothers a man has, the greater the likelihood that he will be gay.