collaboration
1. [ noun ] act of working jointly
Synonyms: coaction
Examples:

: "they worked either in collaboration or independently"

Related terms: cooperation coact
2. [ noun ] act of cooperating traitorously with an enemy that is occupying your country
Synonyms: collaborationism quislingism
Related terms: cooperation collaborate
Similar spelling:   collaborationist
  collaborationism
  collaborative
  collaborate
  collaborator