Trade Insults is a term used to describe the exchange of verbal insults between two or more people. The term can be used in a variety of contexts, from casual banter to heated arguments. The crossword solution for Trade Insults is SPAR, which is an acronym for 'Simulated Practice Attack and Response'. This term is used to describe a type of training exercise in which two or more people engage in a simulated argument or debate in order to practice their communication skills.