"Wert side" is a rare term used in poetry to describe the opposite side of a riverbank. Its pronunciation is /wɜrt saɪd/, meaning the first syllable is pronounced like "word" without the "d" and the vowel in the second syllable rhymes with "eye." The spelling of "wert" is interesting because it is an archaic form of the word "were," which means "was," and is not commonly used in modern English. Therefore, the spelling reflects the historical period in which the word was coined.