black ingratitude忘恩负义
Sinful Ingratitude忘恩罪
return kidness with ingratitude恩将仇报
repay kindness with ingratitude以怨报德
abhorrence of ingratitude憎恶忘恩负义
ingratitude of a world不知感恩的世界
N-UNCOUNT（不可数名词） Ingratitude is a lack of gratitude for something that has been done for you. 不知感恩
...the ingratitude of people toward their military forces in peacetime.
...在和平时期人们对他们军队好处的忽视。