Metathesize is a complex word that refers to the rearrangement of sounds or letters in a word. There are a few synonyms for this word, such as transposition, permutation, and transformation. All of these words denote the same idea of rearranging the constituent parts of a word. For instance, when we use metathesize, we essentially mean a word that has been altered phonetically, such as "aks" instead of "ask." Similarly, when we use transposition, we mean to switch the position of the elements within a word. These synonyms can be used interchangeably depending on the context and the desired effect.