Collaboration
mid 19th century: from Latin collaboratio(n- ), from collaborare ‘work together’.
wiktionary
Originated 1855–60 from French collaboration, from Late Latin collaboratus + French -ion, from Latin con-(“with”) + labōrō(“work”). Morphologically collaborate + -ion
etymonline
collaboration (n.)
1830, "act of working together, united labor" (especially in literature or scientific study), from French collaboration, noun of action from past-participle stem of Latin collaborare "work with," from assimilated form of com "with" (see com-) + laborare "to work" (see labor (v.)).
In a bad sense, "traitorous cooperation with an occupying enemy," it is recorded from 1940; earliest references are to the Vichy Government of France. Collaborationist was used disparagingly in socialist jargon from 1922.
