en masse

adv

Etymology: Borrowed from French en masse (literally “in [a] mass”).

1. In a single body or group; as one, together.

   “[L]et the clergy, en Maſſe, preach him down, admoniſh their ſeveral congregations to be attentive to the duty they owe to the beſt of kings and to their country, and to ſeek to deprecate, by the holineſs of their lives, the wrath of the Almighty.”

   “In the case of the very large caps called detonators, which are used in firing dynamite and gun cotton, is there not some risk of explosion en masse?—Yes, if you get large quantities of percussion powder together, there would be greater danger; […]”

2. In large amounts or numbers, massively.