Related Clues:

• "Groovy," in the '80s
• Trigonometry meas
• “Far out!” in dated slang
• Unit akin to the roentgen
• "Super cool"
• 'Stellar!'
• "Sick!"
• "Kewl!"
• "Cool, man"
• Groovetastic
• Fine US broadcaster in need of satellite
• 'Totally rockin''
• 'That was a ___ joke!,' Dana sputtered
• "Wicked cool!"
• "Gnarly"