(transitive, idiomatic) To betray, especially in a manner which causes serious difficulty for the one betrayed.

past participle of go down the toilet

To promulgate law. / (law, dated) To present the law that applies to a given case. / (idiomatic) To authoritatively or dogmatically assert what is permitted or not permitted.

Obsolete form of upside down.

(idiomatic) Alternative form of look down on

(UK politics) The address of the residence in London of the Prime Minister of the United Kingdom. / (UK politics, by extension, metonymically) The title or office of the Prime Minister.

plural of anti-down quark

(idiomatic, of an event, thing, person) To emerge, come up; be about to happen; to approach or arrive on the scene; to present (itself or oneself).

Offering a seat to somebody.

(euphemistic, idiomatic) Synonym of go down the toilet: to fail.