The correct spelling of the word that sounds like wert convinced is actually "were convinced." The word "were" is the past tense form of the verb "to be" and is pronounced with the schwa sound in the first syllable /wər/. The final consonant sound in "were" is the voiced alveolar approximant /r/. "Convinced" is pronounced /kənˈvinst/ with the schwa sound in the second syllable and the voiced alveolar fricative /v/ in the third syllable.