Related Clues:

• 'Swell'
• Robotic vacuum cleaner brand
• "Super cool!"
• Great, for short
• Old-school 'Cool!'
• Awesome, briefly
• Super-cool, 1960s-style
• Fancy-schmancy language ... or the contents of some special squares in this puzzle
• ''Terrif!''
• 'Wow, cool!'
• Beatles-era ''excellent''
• 'Groovy' relative
• The ___ Five, nickname for the 'Queer Eye' cast
• ''Cool'' that's made a comeback
• Fantastic in the ’50s