Related Clues:

• Avow
• Maintain as true
• Maintain to be true
• Declare confidently
• Declare to be true
• Attest
• Declare solemnly
• State emphatically
• Bear out
• Asseverate
• Assert, state as fact
• State as fact, assert
• State as a fact, assert
• State as a fact, perhaps in court
• Avow or corroborate