See also: Appendix:Variations of "ac"
- (in place names) oak.
- Around 1500 the c was added to some versions of the a- prefix.
- From Middle English a-, from Old French a-, from Latin ad- (“to, toward”).
- (rarely productive) To; toward.
- alternate form of ad-
- Used when the root word started with a "c", "k", or a "q".