A grammatical case expressing contrariety or opposition, corresponding to the English preposition "against".

plural of leader of the opposition

plural of opposition parry

plural of political opposition

(politics, sometimes attributive) The force acting against the opposition.

The team in a British Parliamentary Style debate which gets the sixth and eighth (last) speech.

The team in a British Parliamentary Style debate which gets the second and fourth speech (of a total of eight).

A childhood disorder characterized by an ongoing pattern of anger-guided disobedience, hostility, and defiant behavior toward authority figures.

plural of oppositional defiant disorder