Alternative form of caught with one's pants down

(US) A Friday on which office workers are allowed to dress more casually than usual.

To issue a challenge.

(idiomatic) When the pressure is on; when the situation is urgent or critical

(physics) The antiquark corresponding to the down quark.

(transitive) To endure without complaint or protest.

(transitive, chiefly in the negative) To tolerate, accept, or acquiesce; to take no action.

(Australia, colloquial, informal) Welfare or social security, including unemployment benefits, especially such welfare paid to Aboriginals.

(idiomatic) To a point of exceptional proficiency.

(idiomatic) To garner enthusiastic or wild applause or laughter.