1. in a brotherly manner; with the affection or spirit of brothers
2. in a way that relates to a fraternity or fraternal organization

Examples

• The teammates embraced fraternally after their victory.
• He greeted his old college friends fraternally at the reunion.
• The members of the organization worked together fraternally.
• They were fraternally bound by their shared experiences.
• The group was fraternally organized around common interests.
• He spoke fraternally to his younger colleague, offering guidance.