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100

Smells fishy

Something seems dishonest or suspicious.

100

Raise the roof

To celebrate noisily or cheer loudly.

100

Hit the hay

To go to sleep.

200

Through the roof

Prices or feelings that are rising very rapidly.

200

Pull some strings

To use secret influence or "connections" to get what you want.

200

Fish out of water

Feeling uncomfortable because you are in an unfamiliar environment.

300

Food for thought

Something worth thinking about seriously.

300

Skating on thin ice

Taking a big risk or being in a precarious position with someone’s temper.

300

Downwards spiral

A situation that is getting progressively worse and seems unstoppable.

400

Digging your own grave

Doing something that will cause your own downfall.

400

In a pinch

In a difficult situation where you need a quick solution.

400

Cat is out of the bag

To reveal a secret.
500

Call a spade a spade

To speak plainly and describe something as it really is, even if it’s unpleasant.

Fun Fact: This is one of the oldest idioms—it's been traced back to ancient Greece!

500

Neck of the woods

A specific neighborhood or area.

500

Making out like a bandit

To be highly successful or make a large profit (often easily).