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1. Establish or strengthen as with new evidence or facts
   - confirm, sustain, substantiate, support, affirm
    
2. Give evidence for
   - validate
    
3. Support with evidence or authority or make more certain or confirm
   - underpin, bear out, support

Derived forms: corroborated, corroborates, corroborating

See also: corroboration, corroborative

Type of: agree, check, confirm, correspond, fit, gibe, jibe, match, reassert, tally

Encyclopedia: Corroborate