<p><strong>Verb (used without object)</strong></p><ul><li>to associate socially or romantically with people considered inappropriate company, often due to a difference in status, as between managers and subordinates, or professors and students: Doctors fraternizing with interns is nothing new, but hospital management is considering stricter policies to discourage it.</li><li>to associate cordially or intimately with the people of a conquered country, enemy troops, etc., especially in violation of orders or rules: Of the charges these officers are facing, the most serious is fraternizing with the enemy.</li><li>to associate in a fraternal or friendly way.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>Archaic: to bring into fraternal association or sympathy.</li></ul>