noncausal
/ˌnɒnˈkɔːzəl, ˌnɒŋ-/Definitions
1. adjective
Not caused by anything else; not contingent on external circumstances.
“The noncausal nature of quantum mechanics has puzzled scientists for decades.”
2. noun
A relationship or effect that is not caused by external factors.
“The researcher studied noncausal correlations between the variables.”