Answer: groovy

AnswerCrossword Clue
GROOVY

Cool, once

GROOVY

Old-fashioned "Cool!"

GROOVY

Old-style "Cool!"

GROOVY
Old-fashioned "Neat!"
GROOVY
"Fab!"
GROOVY'60s "Super!"
GROOVYIn top form: Slang.
GROOVY"Delightful" in hippie jargon
GROOVY"Cool!"