The term FROST RELATIVE is composed of two crossword solutions, RIME and DEW. RIME is a type of frost that forms when water vapor in the air freezes onto surfaces, such as windowpanes or tree branches. It is also known as hoar frost or white frost. DEW is a type of condensation that forms when the temperature of the ground drops below the DEW point. It is often seen on grass and other vegetation in the early morning. Together, these two terms refer to the phenomenon of frost forming due to the presence of DEW.