corroborate

Verb

• support with evidence or authority or make more certain or confirm
  • The stories and claims were born out by the evidence
    

• give evidence for

• establish or strengthen as with new evidence or facts
  • his story confirmed my doubts
    
  • The evidence supports the defendant
    

Related words

• Synonyms: 
  underpin , bear out , support , validate , confirm , sustain , substantiate , affirm
• Antonyms: 
  negate , contradict