The phrase "give someone the boot" is commonly used to mean to dismiss someone or to kick them out. However, there are several other synonyms that can be used in its place. For example, one could say "show someone the door," "give someone the heave-ho," or "axe someone." Another common phrase is to "let someone go," as in firing them from a job or position. Some people might also say "give someone their walking papers" or "pink slip" as a euphemism for firing. Ultimately, there are many ways to express the act of dismissing someone, and choosing the right words can convey the sentiment delicately or with more force.