D defs.my
Entry 1 sense Webster, 1913

-ency

· -en·cy · IPA /-ɪnsɪ/
01 A noun suffix having much the same meaning as -ence, but more commonly signifying the quality or state; as, emergency, efficiency. See -ancy.
  1. 1.
    A noun suffix having much the same meaning as -ence, but more commonly signifying the quality or state; as, emergency, efficiency. See -ancy. See: -ancy