This is the 12387th most frequent Portuguese word.
sinistro
"Sinistro" can mean "sinister" (eerie or ominous), "left-hand side," or refer to an "accident" (e.g., insurance context).
In this sentence, 'sinistra' is used to mean something ominous or threatening, highlighting an unfavorable context.
A situação na cidade está bastante sinistra.
The situation in the city is quite sinister.
Here, 'sinistro' takes a colloquial meaning of something amazing or impressive, often used among younger speakers.
O filme foi tão sinistro que fiquei pensando nele por dias.
The movie was so incredible that I kept thinking about it for days.
In this case, 'sinistro' refers to an accident, commonly in the context of vehicular incidents, which can also involve insurance claims.