I

Idiot (adj.)
See: BBO Expert

Insufficient Bid (n.)
Phrase adequately describing partners raise to the 2 level with a 15 count and trump support.

Insult (v.)
The 50 or so expletives thrown at you by your partner when you let an opponent's doubled contract through.

Inverted Minor (adj.)
What is generally found on the floor in the Caddy's Room at an NABC during the late hours when there was no room at the single hotel room that 20 of them booked to save money. Not to be confused with a Convenient Minor.

Invitational Bid (v.)
A method of removing the blame from yourself and instead placing it on your partner.

Irrevocability (adj.)
The feeling of despair one feels when one has revoked in every suit on the first 4 tricks.

Isolating the Menace (v.)
The act of ensuring that the weakest player in the team sits out until the round where a win is guaranteed.