The term "most slashed" refers to the most heavily discounted or reduced price of a particular item or product. As an antonym, the phrase "most expensive" can be used to describe the exact opposite of the word "most slashed." It refers to the highest or most costly price of an item. Other antonyms for "most slashed" include words such as "full price," "unreduced," "premium," "highest-priced," "unchanged," and "list price." These words denote an opposite meaning to "most slashed" and highlight the regular or original cost of an item.