The word "para-meter" refers to a measurable quantity or characteristic that can be used to define a system, process or phenomenon. However, there are several antonyms for this word, which are used to describe the absence or lack of parameters. Some of these antonyms include "amorphous," "indeterminate," "ill-defined," "arbitrary," and "vague." These words convey the idea that there are no specific boundaries, limits or guidelines that can be used to quantify or measure a particular attribute or phenomenon. They imply a condition of uncertainty, ambiguity, or randomness, without clear or objective benchmarks to gauge the success or failure of a given system or process.