WordWeb Online

1. Establish or strengthen as with new evidence or facts
   "his story affirmed my doubts";
   - confirm, corroborate, sustain, substantiate, support
    
2. To declare or affirm solemnly and formally as true
   "Before God I affirm I am innocent";
   - verify, assert, avow, aver, swan, swear
    
3. Say yes to

Derived forms: affirms, affirming, affirmed

Type of: declare, pronounce

Antonym: negate

Encyclopedia: Affirm