Splitting the ears is an expression to describe a loud and unpleasant sound that can be disturbing to the ears. There are several synonyms for this phrase that can be used in different situations. Some examples of alternative phrases are deafening noise, ear-piercing noise, ear-shattering sound, and thunderous din. Other idioms such as ear-splitting sound, splitting headache, and splitting sound can also be used interchangeably. Whether it's a sudden clap of thunder, a screeching car honk, or a blaring speaker, these expressions can effectively describe a noise that is intense and potentially harmful to the ears.