Related Clues:

• "I ain't kiddin'"
• 'I kid you not'
• "Honest to goodness!"
• 'Truly'
• Response to a skeptic
• ''I agree''
• "__ Easy": Buddy Holly classic
• 'And that's the truth!'
• Not a trifling matter
• "Honestly"
• "True dat!"
• Title words before 'Easy' for Linda Ronstadt and 'Hard' for John Lennon
• 'I swear it's true!'
• ''Cross my heart''
• With 3 Down, Linda Ronstadt hit