Know how to use "fewer" and "less"? Find out.
as a stand-alone word, attested from 1788, originally in reference to the anti-federalists in U.S. politics (in the 1830s, of the Anti-Masonic party); as an adjective, from 1857. From anti- in various usages.
A person opposed to a particular plan, position, action, etc: The vote showed three pros and six antis