General:
* Variable: This is the most common antonym, particularly when referring to parameters in programming or mathematics.
* Constraint: This emphasizes the limiting aspect of a parameter.
* Freedom: This suggests the absence of parameters or restrictions.
Specific:
* Objective: If "parameter" refers to a specific goal or desired outcome, "objective" could be an antonym.
* Variable: If "parameter" is used to describe a specific characteristic, "variable" could be an antonym.
Example:
* Parameter: "The parameters for the experiment were set at 20 degrees Celsius."
* Antonym: "The experiment was conducted with no specific temperature parameters (or variables)."
Ultimately, the best antonym for "parameter" will depend on the context of your sentence.