Some common synonyms of event are circumstance, episode, incident, and occurrence. While all these words mean "something that happens or takes place," event usually implies an occurrence of some importance and frequently one having antecedent cause. the events following the assassination.Some common synonyms of event are circumstance, episode, incident, and occurrence. While all these words mean "something that happens or takes place," event usually implies an occurrence of some importance and frequently one having antecedent cause. the events following the assassination.