Related Clues:

• "Far out!" to a physicist?
• 'Totally tubular!'
• "Nifty!"
• 'Pretty amazing!'
• “Far out!”
• 'Awesome, dude!'
• 'Sweet!'
• 'Neato!', '90s-style
• 'Far out, dude!'
• Very cool
• Old-fashioned ''Super!''
• Epic
• ''Awesome!''
• '90s kids' shout
• 'Groovy!', updated