Abstergent is a term used to describe something that is cleansing or purifying. There are many synonyms for this word, including: detergent, cleaning agent, disinfectant, sanitizer, purifier, and decontaminant. These words all convey the idea of removing dirt, grime, or impurities from a surface or substance. Other possible synonyms include cleanser, soap, scouring powder, bleach, and vinegar, depending on the specific context in which the term is being used. Overall, there are many different words that can be used to describe something that is abstergent, each with its own nuances of meaning and connotations.