General prefixes:
* Re-: This prefix means "again" or "do something over." You could use it to create "redefine," meaning to define something again.
* Pre-: This prefix means "before" or "in advance." You could use it to create "predefine," meaning to define something beforehand.
* Mis-: This prefix means "wrongly" or "badly." You could use it to create "misdefine," meaning to define something incorrectly.
Specialized prefixes:
* Auto-: This prefix means "self" or "automatic." You could use it to create "autodefine," meaning to define something automatically. This would typically be used in a technical context, like a software program defining variables on its own.
* Over-: This prefix means "too much" or "excessively." You could use it to create "overdefine," meaning to define something too precisely or in excessive detail.
The specific prefix you choose depends on the specific meaning you want to convey. For example, "redefine" is appropriate if you are talking about defining something differently than it was previously defined, while "predefine" is better if you are talking about defining something before it is used.