Yap.Town

a mancada

blunder, slip-up

m ɐ̃ k a d ɐ
manc to limp + ada action, result, or instance of
noun · feminine Rare #41,326
blunder, slip-up Informal; commonly used in Brazilian Portuguese for a foolish mistake or inconsiderate action.
PO: Esquecer o aniversário dela foi uma mancada enorme.
EN: Forgetting her birthday was a major blunder.

Era o prefeito da cidade, mas deu mancada.

He was the city’s mayor, but he messed up.

— Yojimbo, o Guarda-Costas (1961)

Dei uma mancada.

I messed up.

Que mancada, cara.

What a screw-up, man.

— Juno (2007)

Foi uma mancada, e eu lamento.

It was a blunder, and I regret it.

— Questão de Honra (1992)

Sounds similar to

pancada p ɐ̃ k a d ɐ bancada b ɐ̃ k a d ɐ