Answer: HEPTO

AnswerCrossword Clue
HEPTOAware of, informally
HEPTOAware of
HEPTOWise about, to a cool cat
HEPTONot in the dark about
HEPTOIn on
HEPTOIn the know about
HEPTOIn on, like a cool cat
HEPTOWised up.
HEPTOWise about
HEPTOUp on, as the jive
HEPTOAware of, slangily
HEPTOUp on
HEPTOInformed about
HEPTOAware of, once