Acidize is a term used in the realm of chemistry, which refers to the process of treating a substance with acid. The term is commonly used as a verb and as such, there are several synonyms that can be used in its place. Some possible alternatives include acidify, sour, acidulate, and acidulate. Other similar verbs include corrode, etch, and dissolve. Depending on the context, any of these terms can be used as an apt synonym for acidize. However, it is important to ensure that the meaning and connotation of the word used match the intended meaning in the context.