BODY
ANIMALS
COLOURS
FOOD
OTHER
100

fully listening, paying attention

I'm all ears

100

raining heavily

raining cats and dogs

100

very jealous

green with envy

100

very easy

piece of cake

100

very small quantity, something insignificant

a drop in the ocean

200

I wish you luck

Break a leg!

200

wait and be patient

hold your horses

200

faint

black out

200

something you enjoy (usually used negatively)

(not) my cup of tea

200

ill, physically sick

to feel under the weather

300

very expensive

cost an arm and a leg

300

reveal a secret

let the cat out of the bag

300

very rarely

once in a blue moon

300

be extra nice to someone (usually for selfish reasons)

butter someone up

300

tryingto do something unrealistic

chasing rainbows

400

memorize

learn by heart

400

having a lot of fun

having a whale of a time

400

catch someone in the act of doing something wrong or illegal

catch red handed

400

reveal the truth

spill the beans

400

ignore someone

give someone the cold shoulder

500

deeply in love

head over heels

500

become quiet suddenly

clam up

500

an airplane flight that takes off after midnight

a red eye

500

calm and relaxed, self-possessed

cool as a cucumber

500

make a small problem seem big

make a mountain out of a molehill