sour grapes
US /ˈsaʊər ɡreɪps/
UK /ˈsaʊər ɡreɪps/

1.
inveja, dor de cotovelo
an attitude in which someone pretends to dislike something because they cannot have it or achieve it
:
•
Her criticism of his new car was just sour grapes because she couldn't afford one herself.
A crítica dela ao carro novo dele era apenas inveja porque ela mesma não podia ter um.
•
He said he didn't want the promotion anyway, but I think it's just sour grapes.
Ele disse que não queria a promoção de qualquer maneira, mas acho que é apenas inveja.