coronacoaster UK /kəˈɹəʊnəˌkəʊstə/US /kəˈɹoʊnəˌkoʊstɚ/ noun1 •Emotional ups and downs, or violent changes in mood due to the COVID-19 pandemic and its effects.It's hard to say whether any will last the course, but as we ride the coronacoaster, the certainty is that there will be more to come. — 2020 formscoronacoasters