know one's shit
know one's onions
know one's way around
know what one is doing
have a clue
information
clued in
plug into
know any better
pick someone's brain
know one's ass from a hole in the ground
-nomicon
lexicon
clued up
know which end is up
know
knowledgeability
pramana
term
knowledge
Buddha
test
knowing
quiz
compendious
hear of
brain worker
know-everything
epistemologically
autoepistemic
vocabulary
grok
beknow
know A from B
know like the back of one's hand
epistemically
as far as one knows
every trick in the book
know one's stuff
know from a bar of soap
plugged in
inform
informationalisation
informationalization
skill
scient
instruction
informationize
let know
familiarizer