-osity

Forming nouns.

French ‑osité or Latin ‑ositas.

Nouns in ‑osity are formed from adjectives. One set comes from those ending in ‑ose (see ‑ose¹), such as adiposity (from adipose, body tissue used for the storage of fat), bellicosity (from bellicose, warlike), or verbosity (from verbose). A second set derives from adjectives in ‑ous, such as curiosity (from curious), generosity (from generous), monstrosity (from monstrous), and pomposity (from pompous). See also ‑ity.