Corroborating Synonyms and Antonyms

To assure the certainty or validity of
(Verb)
Synonyms:
  1. warranting
  2. verifying
  3. validating
  4. testifying
  5. substantiating
  6. justifying
  7. evidencing
  8. confirming
  9. backing
  10. attesting
Support with evidence or authority or make more certain or confirm
(Verb)
Synonyms:
  1. supporting
  2. validating
  3. substantiating
  4. buttressing
  5. backing
  6. underpinning