-ancy

-ancy

suff. Condition or quality: buoyancy.
[Latin -antia and -entia; see -ance.]

-ancy

suffix forming nouns a variant of -ance, used to indicate condition or quality: expectancy; poignancy; malignancy.

-ancy

a combination of -ance and -y, used to form nouns denoting state or quality: brilliancy. [< Latin -antia=-ant- -ant + -ia -y3]