The term ACCIDENT SOUND can be summarized by two crossword solutions: SPLAT (5 letters) and SCREECH (7 letters). SPLAT is a sound that is usually associated with something soft hitting a hard surface, such as a water balloon bursting or a person falling. SCREECH is a loud, high-pitched sound that is often heard when two objects rub against each other, such as when a car skids on the road or when metal grinds against metal. Both SPLAT and SCREECH are sounds that are typically associated with accidents.