The word 'jettisons' refers to the act of getting rid of something that is no longer needed. There are a few synonyms that can be used as an alternative to this word. One possible option is 'discard', which means to throw away or get rid of something that is no longer useful or needed. Another option is 'abandon', which means to give up or leave behind something that is no longer necessary or wanted. Additionally, 'dump' can be used as a synonym, which means to dispose of something in a careless or hasty manner. Each of these words has its own unique connotations and can convey slightly different meanings.