sour grapes
成語所屬單字grape
sour grapes — 慣用語
1. a negative reaction in which someone pretends not to want or care about somethin
1.慣用語
釋義
吃不到葡萄說葡萄酸（因得不到某物而假裝不在乎）
a negative reaction in which someone pretends not to want or care about something, simply because they cannot have it themselves
例句
After losing the race, Arjun said he did not care about winning — that was just sour grapes.
Rachel dismissed the award as unimportant, but her friends knew it was sour grapes.