"Flow-on" refers to a secondary or indirect effect that occurs as a result of a particular action or event. There are many synonyms for this term that can be used in its place, including "ripple effect," "spillover," "consequence," and "aftermath." Other synonyms for "flow-on" might include "domino effect," "resulting impact," and "knock-on effect." No matter which synonym is chosen, the meaning remains the same - an effect that occurs as a result of something else. These words are often used in discussions of economics, social issues, and environmental impact, as they help to illustrate the complex relationships between events and their consequences.