SIN Meaning of SIN in English I sin 'do wrong' BrE AmE sɪn▷ sinned sɪnd▷ sinning ˈsɪn ɪŋ▷ sins sɪnz II sin in trigonometry BrE AmE saɪn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012