icky: not good; very unattractive.
Christine decided not to walk into the muddy water saying it looked too icky and smelly.
I.D. : an abbreviation for "identification."
You will need a student I.D. if you want to get into the football game for free.
iffy: questionable; uncertain.
Whether or not the project will be completed on time is kind of iffy at the moment.
in: participating; a part of a group effort. (used with "be" and "count (one) in")
If everyone wants to get a pizza, then I’m in. (You can count me in.)
in a jiffy: very fast.
I’ll have your order to you in a jiffy.
in line for: next.
Nguyen is in line for a big promotion at work.
in no time flat: very quickly.
We ordered some Chinese food and it was delivered in no time flat.
in one piece: all together; intact; without injury.
Somehow 20 people came out of the burning airplane in one piece while 145 others died.
in one’s pocket: to have a person’s loyalty.
Jennifer used to be in Pablo’s pocket, but now she’s seeing other guys.
in the loop: to have information that others might not have; to have some degree of power or influence.
I’m no longer in the loop at work.
in the doghouse: in trouble; to experience a lot of difficulty with another person.
I’ll be in the doghouse if I don’t bring my wife flowers on Valentine’s Day.
in the money: to suddenly have a lot of money.
After her uncle died and left a big inheritance, Lee was in the money.
in the works: something that is being planned right now; as we speak.
The boss doesn’t want to give us all the details right now, but he says that something big is in the works.
IOU: a note promising the payment of money–stands for "I owe you."
Bedros wrote his landlord an IOU when he couldn’t pay the rent.