WordWeb Online

1. Report or maintain
   "He averred that he was the victim of a crime";
   - allege, say
    
2. To declare or affirm solemnly and formally as true
   "Before God I aver I am innocent";
   - affirm, verify, assert, avow, swear

Derived forms: averred, averring, avers

Type of: assert, asseverate, declare, maintain, pronounce

Encyclopedia: Aver