-ility
compound suffix (F. -ilité, L. -ilitās), consisting of -ity added to adjs. in -il (civility), -ile (servility), or -le (ability).
| 1865 Mrs. Gaskell Wives & Dau. xxxi, He heard of his successor's affability, and sociability, and amiability, and a variety of other agreeable ‘ilities’. |