Related Clues:

• Proven thing
• "Scout's honor!"
• Indisputable statement
• Loud variety turn in reality
• Undisputed truth
• "That's the truth!"
• "That's a fact!"
• Carbon will puncture spare tyre in particular
• "For real!"
• "It ain't fiction, just a natural ___"
• Fiction's counterpart
• The 100% truth (accept no imitations!)
• "It's on the level!"
• "Alternative ___" (bit of fake news)
• It's not debatable