"Most rent" is a term commonly used in the real estate industry to describe the highest amount of money paid for a property. Antonyms for "most rent" include least rent, lowest rent, cheapest rent, and lowest-priced rent. These terms are used to describe the opposite end of the spectrum, indicating a lower amount of money paid for a property. On the other hand, words like expensive, high-priced, and premium would be considered synonyms for "most rent." When looking for a property, it is essential to consider both the most and the least rent to make an informed decision that aligns with your budget and needs.