The phrase "is overtaken" refers to the act of being surpassed or taken over by something or someone else. There are many synonyms that can be used to convey this meaning, such as "outstripped", "surpassed", "exceeded", "superseded", "outdone", "beaten", and "trumped". All these words signify that something has taken place that has put something else in a position of being inferior or secondary. For instance, if a former champion is defeated by a new up-and-coming athlete, it can be said that the former champion has been overtaken by the new athlete or that the new athlete has outdone the former champion.