[ shíyánérféi ] get [grow] fat because of “eating one's own words”-- be worse than one's word; get[grow] fat by eating one's own words; fail to make good one's promise; break fait with sb
Example Sentences:
1.
Someone who writes about " reneging on pledges 有人写出了“食言而肥”这样的词语，
2.
And then he reneged on his pledge 可是他最后却食言而肥。
3.
And then he reneged on his pledge and that was my motive for attack 之后却食言而肥那便是我采取攻击的动机
