Weather
Animals,plants
Weather idioms
Animal idioms
Space
100
A period of very hot weather
Heat wave
100
A very large marine mammal
Whale
100
Not in a good health condition
Under the weather
100
To get extremely upset or angry
Have kittens
100
A unit of astronomical distance
Light year
200
A swirling wind
Tornado
200
One word for toads, frogs, newts, salamanders
Amphibians
200
To rain heavily
To rain cats and dogs
200
To reveal a secret or a surprise by accident
Let the cat out of the bag
200
A region of space having a gravitational field so intense that no matter or radiation can escape
Black hole
300
A brief, strong rush of wind
Gust
300
A bird which is said to be the national symbol of our country
Stork
300
To waste your time trying to achieve something impossible
Chase rainbows
300
There are other choices (referring to persons)
There are plenty of fish in the sea
300
A part of a meteor strikes the ground
Meteorite
400
Rain and snow mix
Sleet
400
A large group of animals distinguished by the possession of a backbone
Vertebrates
400
Very happy
On cloud nine
400
A person who lends money at exorbitant interest rates (esp. supported by organised crime)
Loan shark
400
Break up into small parts, typically as a result of impact or decay
Disintegrate
500
A snow storm
Blizzard
500
Trees that have leaves
Deciduous
500
To make a situation more pleasant or enjoyable
Brighten up the day
500
To do or say something that causes trouble and chaos
Put the cat among the pigeons
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