He fraternizes with people from all walks of life.

There were many fraternizations at the party last night.

Fraternism was a common practice among soldiers during wartime.

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.

Sexual fraternization is strictly prohibited in the workplace.

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.