Related Clues:

• Words of accomplishment sung with upturned palms
• "There you have it!"
• Word of discovery
• I've got it!
• Sudden understanding
• Cry upon figuring out 66-Across
• It's "eureka!" either way
• 'Here's the answer at last!'
• Bingo alternative?
• "I finally get it!"
• Exclamation of knowledge
• 'Look what I just did!'
• ''Hooray for me!''
• 'Now it makes sense!'
• "Check this out!"