something bad
This isn't a bad thing.
Estás muy callado hoy, ¿te pasa algo malo?
You're very quiet today, is something wrong?
Saben, esto no es necesariamente algo malo.
You know, this isn't necessarily a bad thing.
— Lars y una chica de verdad (2007)
Tenía la sensación de que algo malo estaba pasando.
I had a feeling that something bad was happening.
Es probable que suceda algo malo.
Something bad is likely to happen.