1. no-brainer
Definition:
Something that is perfectly obvious; easy to do, requiring very little effort.
Example:
What's one plus two? That's a no-brainer!
2. Pipe down
Definition:
To stop talking; to lower the volume. Frequently used as a command meaning "Be quiet!"
Example:
Pipe down! Mom's talking on the phone.
3. hush-hush
Definition:
Very secret
Example:
Let's keep that information hush-hush, OK ?
4. fat cat
Definition:
A person who has great wealth and power; a tycoon.
Example:
Those fat cats in Washington are going to keep pressuring Congress to pass the tax bill.
5. screw up
Definition:
To make a major mistake.
Example:
Tom screwed up the whole project, and now we're four weeks behind schedule.
