anti-

Against, opposed to.

anti- + abortion → antiabortion

anti- + racism → antiracism

Counteracting, neutralizing.

anti- + aircraft → antiaircraft

anti- + freeze → antifreeze

The opposite of what is typically expected.

anti- + hero → antihero (“a protagonist who acts in an unheroic manner”)

anti- + climax → anticlimax (“a failed or reverse climax”)

Physically opposite, reverse in position or direction.

anti- + clockwise → anticlockwise

anti- + Arctic → Antarctic

A rival or counterpart to.

anti- + pope → antipope (“a person who claims to be the real pope”)

anti- + Christ → Antichrist

Obsolete form of ante-.

antichamber, antiport, antiroom

A′ntiport.* n[oun] s[ubstantive] [Fr[ench] antiporte, Lat[in] ante and portus.] An outward gate or door. It should be written anteport.