turns in, reports (on)
Delata a los polis que aceptan dinero.
Rat out the cops who take bribes.
— American Gangster (2007)
Tu acento te delata.
Your accent gives you away.
Su cara lo delata.
His face gives him away.
— Los siete samuráis (1954)
Ahora, si usan uno de esos brazaletes con el arco iris y eso, eso te delata.
Now, if you wear one of those bracelets with the rainbow and all that, that gives you away.
— Elephant (2003)
No se delata a los amigos.
You don't snitch on friends.
— Los falsificadores (2007)