Related Clues:

• 'Groovy!'
• Flunky's answer
• 'Of course'
• 'You betcha'
• 'Without a doubt!'
• Calm and collected
• 'Rad!'
• Word on a Ouija board
• Triumphant shout
• Rubber-stamp
• 'Absolutely!'
• ''You rang?''
• Just fine
• Not 38-Across
• OK word?