There are many synonyms for the term "economic upswings," which refers to a period of strong economic growth. Some potential synonyms include economic expansion, economic boom, economic prosperity, economic progress, and economic improvement. Other options might include economic upturns, economic upsurges, and economic booms. All of these terms refer to a positive economic situation in which businesses are thriving, unemployment is low, and people have more money to spend. However, it's important to remember that each of these synonyms may have a slightly different connotation or context, so it's important to choose the right one based on the specific situation being described.