n. | 1. | The act of working together; united labor. |
2. | the act of willingly cooperating with an enemy, especially an enemy nation occupying one's own country. |
Noun | 1. | collaboration - act of working jointly; "they worked either in collaboration or independently" Synonyms: coaction |
2. | collaboration - act of cooperating traitorously with an enemy that is occupying your country Synonyms: collaborationism, quislingism |