(idiomatic) Ideal moment to do something.

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).

One who opposes another physically (in a fight, sport, game, or competition). / One who opposes another in words (in a dispute, argument or controversy).

(obsolete) Opposing; adverse; antagonistic. / (obsolete) Situated in front; opposite.

The practice of taking advantage of any situations or people to achieve an end, often with no regard for principles or consequences.

(rare) Of or pertaining to a town or conurbation.

(rare, obsolete) A town dweller. / (also Oppidan) A class of student in traditional English public schools such as Eton; opposed to colleger or King's Scholar.

plural of oppidan

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

(informal, idiomatic) The United States.