How to Say "dirty trick" in Spanish
The Spanish word for “dirty trick” is “faena” — B2 level.
English → SpanishB2
nounB2informal
something mean done to someone

Examples
¡Qué faena! He perdido el último autobús.
What a bummer! I've missed the last bus.
Me hicieron una faena y me dejaron sin entrada.
They played a dirty trick on me and left me without a ticket.
Es una faena que tengas que trabajar el domingo.
It's a shame that you have to work on Sunday.
Exclamatory use
When used to express disappointment, it almost always starts with 'Qué'.
Word Choice
Mistake: “Es una faena (to describe a person).”
Correction: Use it to describe the SITUATION, not the person who is annoying.
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