In an oppositive manner.

plural of opposit

People who are completely different make ideal partners.

plural of polar opposite

(childish) A contrived holiday on which everything is done backwards, for example "yes" means "no".

(politics) Negative information retrieved about a candidate's opponent in an election for use in campaigning.

A recognized political party or group of parties in multiparty political systems that is present in Parliament or some other legislative body and does not control the floor (usually due to being in the minority).

(fencing) The deflection of the incoming attack without ever losing contact with the blade from the initial engagement.

(geometry) Either of the angles directly opposite to each other when two lines intersect in a plane.

plural of opposite angle