Camaraderie /kaməˈrädərē / noun 

Definition: Camaraderie is a spirit of mutual trust, friendship, and goodwill among people who spend plenty of time together.

It is also mutual loyalty and friendship among group members closely associated with and engaging in an endeavor or activity. Camaraderie is also a mutual friendly good fellowship. It can also be the quality of affording mutual sociability or familiarity.

Etymology: The word first appeared in the middle of the 19th Century. Camaraderie originated from the French word camarade. Comrade is the Middle French ancestor and the source of the word camarade. Camarade was used in Middle French to mean companion, roommate, or people sleeping in a single room. Camarade was derived by way of Spanish from the Latin camera or camara that meant chamber.

In a Sentence

An impressive level of camaraderie in and out of the office can make workers more productive in their endeavors.

In her monthly report, Denise said that camaraderie with other organization members is what attracts new members to join.

The Bucs have developed a great camaraderie after playing together for so long.

Synonyms 

Community, Brotherhood

Antonyms 

Hostility, Unfriendliness