[-ity] n suffix, pl -ities [ME -ite, fr. OF or L; OF -ite, fr. L -itat-, -itas, fr. -i- (stem vowel of adjs.) + -tat-, -tas -ity; akin to Gk -tet-, -tes -ity]: quality: state: degree "alkalinity" "theatricality"
-ITY
Meaning of -ITY in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012