WordWeb Online

1. Cause to be more favourably inclined; gain the good will of
   "She managed to mollify the angry customer"
   - pacify, lenify, conciliate, assuage, appease, placate, gentle, gruntle
    
2. Make more temperate, acceptable, or suitable by adding something else; moderate
   - temper, season
    
3. Make less rigid or softer

Derived forms: mollified, mollifies, mollifying

See also: mollification

Type of: calm, calm down, lull, quiet, quieten, soften, still, tranquilize [N. Amer], tranquillise [Brit], tranquillize, weaken