Use "enmass" in a sentence

1. Kathy’s lips curved into a reminiscent smile as she remembered the chaos her family had created, and the frustration she and her cousins had trying to keep her parents and siblings (who’d descended enmass that summer) away from “helping” them redo her attic

2. Joel had come over to her house and whisked her away from her family (who’d gathered there enmass)