U

Unassuming Cue-Bid (n.)
A cue bid of an opponent’s suit you assume that your partner will bid over and never does.

Undo (v.)
1. Marriage annulment between partners who played in part scores when grand slams were cold!

2. A technique used to show a 2 suited hand by only making one bid.

Unusual 2NT (n.)
A convention devised by a sadist.