WordWeb Online

1. Exercising power or authority
   "The date of accession of each of the four members of the reigning dynasty was found"
   - regnant, ruling

1. Have sovereign power
   "Henry VIII reigned for a long time"
    
2. Be larger in number, quantity, power, status or importance
   "Money reigns supreme here"
   - predominate, dominate, rule, prevail

Sounds like: raining, reining

See also: powerful

Type of: govern, rule

Encyclopedia: Reign