Spitting out is a phrase that is commonly used to describe the act of forcefully expelling something from one's mouth. However, there are several other synonyms that can be used in place of spitting out to convey the same meaning. These words include eject, expel, discharge, squirt, discharge, and vomit. Each of these words has a slightly different connotation, and the best choice for a particular situation may depend on the context in which it is being used. However, regardless of the word chosen, each of these synonyms conveys the same idea of forcefully expelling something from one's mouth.