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
   "she mollified her criticism";
   - temper, season, moderate, mod [informal]
    
3. Make less rigid or softer

Derived forms: mollified, mollifies, mollifying

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