英和和英

I know very well.

a know-all

knew full well

I know him

I am acquainted with him.

I know it for a certainty.

get to know

a surplus

understand

get wise to

You get it, right?

You know a lot.

to have information in the mind

to be understood

I know

tacit knowing

known for certain

That is the only thing that I know.

That is all I know.

That is the only thing I know.

to form a vague idea of anything

having much knowledge

being well known

well-known

He knows everything.

to know one's way about―know the ins and outs of a matter―know the ropes

knowledgeable

a state of having only a slight knowledge of a subject or a person

know…like a book …

pretending to know