mid-14c., from Old French ingratitude (13c.) and directly from Latin ingratitudinem (nominative ingratitudo), noun of quality from ingratus (see ingrate).
实用例句
1. The Government could expect only ingratitude from the electorate.
政府从选民那里得到的只有忘恩负义。来自柯林斯例句
2. His friends were shocked by his ingratitude to his parents.
他对父母不孝,令他的朋友们大为吃惊.来自《简明英汉词典》
3. The person always returns ingratitude for kindness.
