fraternize - Wiktionary, the free dictionary

• fraternise (non-Oxford British spelling, used in many Commonwealth countries but not Canada)

From French fraterniser.

• (Received Pronunciation) IPA^(key): /ˈfɹætənɑɪz/
• (US) IPA^(key): /ˈfɹætɚnɑɪz/

fraternize (third-person singular simple present fraternizes, present participle fraternizing, simple past and past participle fraternized)

1. (intransitive) To associate with others in a brotherly or friendly manner.
2. (intransitive) To associate as friends with an enemy, in violation of duty.
3. (intransitive) To socialize in confidentiality.
4. (intransitive) To have an intimate or sexual relationship with a forbidden party.

fraternize

1. inflection of fraternizar:
   1. first/third-person singular present subjunctive
   2. third-person singular imperative