Definition:	To say negative things about someone or something.
Example:	1) Lisa bad-mouthed her boss at the water cooler. 2) I wish people would stop bad-mouthing Cleveland. It’s really a very nice city.
Etymology:	“ Bad “ means not good, and ‘ mouth’ refers to the physical act of speech.

Definition:	A person who has great wealth and power; a tycoon.
Example:	1) Many of the city's fat cats eat at that steak restaurant on First Avenue. 2) Those fat cats in Washington are going to keep pressuring Congress to pass the tax bill.
Etymology:	This term comes from the 1920s, when it was used to describe wealthy contributors to American political parties.
Synonyms:	big shot

Definition:	All the time; always available; without a break.
Example:	1) In New York City, a lot of stores are open 24/7. 2) I had to move because my neighbors played loud dance music 24/7.
Etymology:	Some convenience stores are open 24 hours a day, 7 days a week. The phrase is used for anything that is always (or nearly always) available.
Synonyms:	around the clock