a suffix used to form abstract nouns from adjectives with stems in -t, -te, -tic, and especially -nt(democracy; accuracy; expediency; stagnancy; lunacy), and sometimes used to form action nouns (vacancy; occupancy).
2.
a suffix of nouns denoting rank or office, sometimes attached to the stem of a word rather than to the word itself: captaincy; magistracy.
Origin: representing French -cie, -tie,Latin -cia, -tia,Greek -kia, -keia, -tia, -teia; in most cases to be analyzed as consonant + -y3: the consonant making the whole or the last member of the preceding morpheme
abstract noun suffix of quality or rank, from L. -cia, -tia, from Gk. -kia, -tia, from abstract ending -ia + stem ending -c- or -t-. The native correspondents are -ship, -hood.