The act of impawning, or pawning an item for a loan, has a few synonyms that can be used interchangeably. One common synonym is "hocking," which refers to the act of giving an item as collateral for a loan. Another similar term is "pawning," which is the more common term used for this practice. Additionally, "pledging" or "mortgaging" an item can also be used to describe impawning. These synonyms are often used in financial and loan documents, and can help to provide variety in writing and speech. Regardless of the term used, impawning remains a common way for individuals to obtain quick cash by temporarily giving up ownership of their possessions.