Dash
Aliases: Dash, dash
When you dash, you move so fast you cannot be targetted by any reactions targetting your movement
Defence
Aliases: Defence, defence
Defence is the value required to hit the target. If your dodge is higher than the attack roll, the attack misses.
Dex Cap
Aliases: dex_cap, Dex_cap, dex cap
Dex cap refers to the maximum possible value your dexterity score can be considered to be when calculating your dodge score
Disadvantage
Aliases: disadvantage, Disadvantage
Roll two dice and use the lower value, this can stack.