Adam
I don't know him from Adam

agog
I was all agog to know what had happened

aught
for aught I know

b
he doesn't know B from a bull's foot

backwards
to know something backwards

comfort
...comfort to know that they were already in town

damn
to know damn well

exactly
I don't exactly know

fact
I know it for a fact

fit in
...I don't know if my arrangements will fit in with yours

fuck-all
I know fuck-all about it

hearsay
I know it from hearsay

honestly
honestly, that is what I know about him

intuition
to know by intuition

know
do you know London?

know-all
sabichão

know-how
know-how

know-it-all
sabichão

know-nothing
pateta

know-nothingism
agnosticismo

known
to become known

let in for
...he didn't know what he was letting himself in for

limitation
I know my limitations

mere
...got to know that...

rightly
I don't rightly know

safely
let me know if you've got home safely

satisfied
he is satisfied to know that...

set about
she does not know how to set about it

slightly
I know him slightly

where
I don't know where she lives