Unwhipped vote

Free vote.

unparliamentary language

Words or expressions contrary to the proprieties of the House. A Member who refuses to withdraw unparliamentary language may be named by the Speaker.

Unicameralism

A parliamentary system in which the legislative power is vested in one chamber.

Unanimous consent

The consent of all Members present, required when the House wishes to set aside its rules or usual practices without notice. Actions taken by unanimous consent do not constitute precedents.

Synonym: leave of the House.