Related Clues:

• Floor
• 'Holy moly!'
• Nifty, in the 50's
• Flabbergast
• Slangy approval
• Wicked
• Def, to a slangster
• It's equal to 100 ergs per gram
• Peachy-keen
• Spiffy
• 'Far out!'
• Marvy
• 'Cool!'
• 'Holy cow!'
• Stun