The word "most putrefactive" refers to something that is extremely decayed or decomposed. Some antonyms for this word include fresh, clean, pure, and wholesome. Fresh refers to something that is new or recently made, without any signs of decay. Clean implies that something is free from dirt, contaminants or any impurities. Pure suggests that there are no additives or foreign substances in something, it is completely unadulterated. Wholesome describes something that is good for the body and beneficial, providing nourishment and promoting health. These words offer a sharp contrast to "most putrefactive," and can be used to describe fresh produce, clean air, pure drinking water, or wholesome food.