Slippage is the difference between expected trade price and the price you actually get.
Volatile or thin markets increase slippage. Setting max slippage too high invites sandwich attacks.
In research workflows, Slippage is usually interpreted with Automated market maker, Liquidity, Sandwich attack, and Market order rather than as a standalone signal. Indicators lag. Combine them with liquidity and attention context instead of using any single oscillator alone.