(of a hit record) That has entered the charts in a high position, or has climbed rapidly in the charts, or is thought to have the potential for further rapid advancement.

(idiomatic) Superlative; impossible to beat.

Alternative form of up the creek

(idiomatic) To treat something very delicately or carefully.

(idiomatic) To associate with another in a joint enterprise.

(transitive) To impregnate.

(idiomatic) Alternative form of up with the lark

(idiomatic) To act in a haphazard or aimless way; to act frantically or without control.

(US, idiomatic, informal) To become organized, current, or aware.

Alternative form of witchgrass