The spelling of "wert convinced of" can be a source of confusion for English language learners. The word "wert" is an archaic form of "were" and is pronounced /wərt/ (wuhrt). "Convinced" is pronounced /kənˈvɪnst/ (kuhn-vinced) and means to firmly believe or be persuaded of something. "Of" is pronounced /ʌv/ (uhv) and is used to indicate possession or connection. Therefore, "wert convinced of" means "you (were) firmly believed (convinced) in something (of)."