- -ac
- -ac [ak, ək][Fr -aque < L -acus < Gr -akos (or directly < any of these)] suffix forming adjectives1. characteristic of [elegiac, demoniac]2. of, relating to [cardiac, coeliac]3. affected by or having [maniac]: The resulting adjectives are sometimes used as nouns
English World dictionary. V. Neufeldt. 2014.