Dispose of is a common phrasal verb used to indicate someone getting rid of something or someone. There are various synonyms to this word, which include discard, dump, eliminate, throw away, jettison, trash, remove, relinquish, scrap or expel. These words can be used interchangeably with dispose of, depending on the context of the sentence. While some of these words imply a sense of getting rid of something considered undesirable or useless, others may indicate a more intentional or systematic approach to getting rid of something, such as discarding waste materials. So, depending on the context and tone of your sentence, you may choose one of these synonyms that best matches your message.