Related Clues:

• Feature, primarily pretence or reality?
• Truth from Conservative in blubber
• Court case determination
• Researched item
• Reality about to get inverted in newspaper
• "A dolphin sleeps with one eye open," e.g
• It's undeniable to those characters at the end of 15 across
• ___-checker
• It's true!
• Observable truth
• What is on top of calories in butter? Every scientist knows that!
• Basis of a trivia question
• No mere opinion
• Reality; certainty
• Loud turn, in reality