All terms
The gap between the price you expected and the price you got.
Slippage happens because prices move between the moment you submit a trade and the moment it executes, and because your own order consumes liquidity as it fills.
Every DEX lets you set a slippage tolerance. Set it too low and your transaction fails. Set it too high and you invite sandwich attackers to take the difference.
For a major pair, 0.1 to 0.5 percent is usually right. If a token demands 15 percent slippage to trade, treat that as a warning, not an inconvenience.
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More trading terms
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