Regressions are a statistical concept where one variable is predicted by another variable. The concept is widely used in various fields, including psychology, economics, medicine, and engineering. There are several synonyms for the word "regressions," such as "retrogression," which refers to a process of deterioration or decline. Another synonym is "reversion," which suggests a return to a previous state or condition. "Backsliding" is another option, which implies a relapse or worsening of a situation. "Degeneration" is also a possible synonym, which implies a gradual decline or deterioration. These synonyms highlight the various nuances of the concept of regressions, each with its own implications and applications in different fields.