know nothing

know little

one can tell the wheat from the chaff with just one trial [written and colloquial]

several close friends

remains unknown

do not know

unconsciously

for some unknown reason

lit. unsure to react by showing frustration or laugh off something odd, meaning driving one crazy or unable to decided what sort of reactions to give

Very

extremely / so / really

Feeling so good

unintelligible

Not knowing the reason why

at a loss

it is used to describe a person or a thing that is absurd and a nonsense

not knowing

Not knowing until somebody tell you so

also know

commonly known

what the fuck do you know?; how the fuck would you know? [colloquial]

everybody knows

not knowing completely

also know

to be notified again or later

as one can imagine

knowable

Tongzhi (a title)

inform

well-known