plural of polar opposite

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

plural of opposite angle

(idiomatic) Holding starkly opposite views on an issue.

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

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).

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

(politics, UK) In a house of legislature following the model of the Westminster system (such as the UK House of Commons), the parliamentary leader of the largest political party not forming the government.

plural of Leader of the Opposition

(politics) Alternative form of Leader of the Opposition