To imply that someone is a "mother fucker, "asshole," or a "bastard." It is the noun form of the cuban verb "singar," which means "to fuck." Vulgar.
Miguel Díaz-Canel es un tremendo Singao!
by Tenshi03 July 13, 2021
Usually used in Cuban slang to refer to someone with a bad reputation, characterised for having a nasty attitude towards others or practice and support immoral behaviours. When used with the word ‘perro’ before the word denotes a high degree or superlative of the above-mentioned in addition to cruelty and lack of dignity.
Díaz-Canel es un perro singao.
Usually used in Cuban slang to refer to someone with a bad reputation, characterised for having a nasty attitude towards others or practice and support immoral behaviours. When used with the word ‘perro’ before the word denotes a high degree or superlative of the above-mentioned in addition to cruelty and lack of dignity.
Díaz-Canel es un perro singao.
1. Cuban word, to imply that someone is a "mother fucker, "asshole," or a "bastard." It is the noun form of the cuban verb "singar," which means "to fuck." Vulgar. Also see Singa(f).
Spanish: Tu eres un singao!
English: You are a mother fucker!
by Cubanito10 February 3, 2010
Cuban slang for someone who is generally selfish, screws others over in order to get what he/she wants, and a son of a bitch.

Random: Don't use spanish words when you're talking in English. It sounds Mexican.
Ñooo ese tipo si que es un tremendo singao
by BornCuban93 August 21, 2009