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'Sinistro' is a carioca's slang that could means st. cool or st. really bad. It depends on the emphasis.

ex.: Man, the party last night was 'sinistro'. (cool)

ex.: So, it seems the accident was 'sinistro'. (terrible)
by Antonio Proenca March 16, 2007

Words related to sinistro

carioca's slang cool maneiro rio de janeiro