Parapsychological is an adjective that describes events or experiences that are beyond the scope of normal scientific explanation. The opposite, or antonym, of parapsychological would be terms like rational, scientific, logical, empirical, or conventional. Rational is a term that describes events or experiences that can be measured, observed, and quantified within the laws of science. Scientific describes events or experiences that have been tested and confirmed using the scientific method. Logical indicates a logical explanation for an event, while empirical refers to evidence-based explanations. Conventional describes events or experiences that are well-established and widely accepted within a particular field.