soft-soap

soft-soap
v [Tn] (infml 口) persuade (sb) by flattery 以甜言蜜语打动（某人）; 向（某人）灌米汤
    Don't try to soft-soap me; I'm not changing my mind. 别给我灌米汤了, 反正我不改主意.

牛津英汉双解词典