in a mass or as a single group; all together at once.
From French en masse, literally 'in mass.' The French phrase en means 'in' and masse means 'mass' or 'crowd.' Used in English to describe collective action or movement.
The phrase 'en masse' became famous during political uprisings—when crowds moved 'en masse' or 'enmass,' it signaled powerful unified action that governments couldn't ignore, making it a word of revolution and solidarity.
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