to be aware that one could or should act better or think more correctly
know best
to be the best guide, authority, etc.
know from
â
you know
â
Informal you understand: a phrase used in conversational pauses
See know in American Heritage Dictionary 4 Idioms
in the know
Informal
Possessing special or secret information.
you know
Informal
Used parenthetically in conversation, as to fill pauses or educe the listener's agreement or sympathy: Please try to be, you know, a little quieter. How were we supposed to make camp in a storm like that, you know?