Idioms
Slang/ Colloquialism
Formal English
Fixed Expressions
Phrasal Verbs
100

See the light

You are dying/ Dead

100

Y'all

You All

100

Sincerely

From

100

Long time no see

When you see something for the first time in a long time

100
To ease up

To make easier

200

Under the weather

You are sick


200

BAE

Your girlfriend/ boyfriend (Before Anyone Else)

200

Enquire

To ask about/ to learn about

200

One size fits all

There is only 1 size made and it fits everyone

200

To come up with

To think of ideas

300

Over the moon

You are SO excited


300

BOP

A great song

300

Thereafter

After

300

On the other hand

To introduce a contrasting point of view

300

To drop out

to quit

400

Kill 2 birds with 1 stone

Get 2 things done at the same time; a lot of times on inadvertently

400
I am dead

I am in shock OR something was very funny

400

Moreover

Also

400

As a matter of fact

In reality/ the truth is

400

To care for

To like someone/ to care for someone

500

Can't see the forest for the trees

Cannot understand the big picture 

500

Bussin

Something tastes really good

500

Bequeath

To leave to

500

Keep a straight face

a blank face, especially when about to laugh

500

To ask out

to asking someone on a date