I thought it was sin-o

r/Sino pisses off so much redditors who overstate it's influence that it will be sad when it's banned.

It is pronounced "sighe-nough".

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Wiktionary: /ˈsɪnoʊ/, /ˈsaɪnoʊ/

hope this helps!

it's pronounced the same as what you shout when your friend Simon does something very foolish

I'm in the cunt side of Britain so Sine-oh

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