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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Old-style "Cool!":

HEP: Cool, old-style
NEAT: Cool! old-style
NEATO: Cool! old-style
GROOVY: Old-style "Cool!"
NEATO: Old-style "Way cool!"
RETRO: Old-style yet cool