Fraternization

Fraˊter-ni-za′tion

(? or ?)

,

Noun.

The act of fraternizing or uniting as brothers.

I hope that no French

fraternization

. . . could so change the hearts of Englishmen.

Burke.

,

Noun.

The act of associating and holding fellowship as brethren.

fraternization ‎(plural fraternizations)

The act of fraternizing or uniting as brothers.
Having a friendly relationship with the enemy.
(chiefly US, pejorative) any type of disallowed, supposedly unethical and unprofessional, social or intimate contact between employees, especially between different gender, class or rank.

act of fraternizing