WordWeb Online

1. Appropriate for achieving a particular end; implies a lack of concern for fairness
    
2. Giving an advantage
   "a contract advantageous to our country"; "it is socially advantageous to entertain often";
   - favorable [US], favourable [Brit, Cdn]

See also: beneficial, discriminatory, expedient, good, opportune, plus, positive, preferential, profitable

Encyclopedia: Advantageous