Subprime refers to borrowers with poor credit ratings who are at higher risk of defaulting on loans. Synonyms for the term could include words such as "risky" or "high-risk." Other options could include "non-prime," "substandard," "low-quality," or "below average." These terms are often used by lenders, credit agencies, and financial analysts to describe loans or borrowers who may have a higher likelihood of defaulting. Additionally, terms like "non-traditional," "alternative," or "unconventional" could also be used to describe borrowers who may not fit within standard lending criteria. Whatever term is used, it is important for lenders to carefully assess the risk of borrowers in order to protect their investments and manage financial risk.