-ity

-ity

suff.
State; quality: abnormality.

[Middle English -itie, from Old French -ite, from Latin -itās, variant of -tās, -ty.]

-ity

suffix forming nouns
indicating state or condition: technicality.
[from Old French -ite, from Latin -itās]

-ty1

,
a suffix of numerals that are multiples of ten: twenty; thirty.
[Middle English; Old English -tig, c. Old Frisian -tich, Old High German -zug, Old Norse tigr, Gothic tigjus; akin to ten]

-ty2

,
a suffix occurring in loanwords from Latin and French, forming mainly from adjectives nouns denoting state or condition: ability; certainty; chastity; unity.
[Middle English -te(e) < Old French -te(t) < Latin -tātem, acc. of -tās]