Related Clues:

• 'Really!'
• Exactly
• As much
• 'You said it!'
• Attention-getter
• 'You can say that again!'
• To boot
• 'You betcha!'
• Surprisingly
• Enough
• As a surprising fact
• Emphatic agreement
• 'You said a mouthful!'
• Phrase tacked on for emphasis
• --- than (at least)