Meaning of -CY in English

-CY

[-cy] n suffix [ME -cie, fr. OF, fr. L -tia, partly fr. -t- (final stem consonant) + -ia -y, partly fr. Gk -tia, -teia, fr. -t- (final stem consonant) + -ia, -eia -y] 1: action: practice "mendicancy"

2: rank: office "baronetcy" "chaplaincy"

3: body: class "magistracy"

4: state: quality "accuracy" "bankruptcy" "normalcy"--often replacing a final -t or -te of the base word

Merriam-Webster English vocab.      Английский словарь Merriam Webster.