Wiktionary
floppiness
n. The characteristic or quality of being floppy
Usage examples of "floppiness".
A floppy white hat topped her graying hair, and the insouciance of its floppiness made her audience warm up to her immediately.
The floppiness of their clothing, as alike as the dress of twins clothed by their parents—baggy jeans, oversized short-sleeved T-shirts (pale blue and navy blue) worn over oversized long-sleeved T-shirts (light yellow and dirty white)—heightened the vehemence of their gestures.