1. People who buy goods before they reach the market in order to resell them at a higher price; those who engage in forestalling.
Usage: archaic or historical; often used in a critical or disapproving sense
2. People who prevent or obstruct something from happening; those who act in advance to stop or hinder an action.
Usage: rare; literary

Examples

• Medieval forestallers were condemned for artificially inflating grain prices.
• The forestallers purchased all available wool before it could reach the town market.
• Laws were enacted to punish forestallers who monopolized essential commodities.
• These forestallers sought to control the supply and maximize their profits.
• The king's advisors warned him about forestallers disrupting fair trade.