inekˈsplikəb(ə)l/

in·ex·pli·ca·ble
inekˈsplikəb(ə)l/
adjective
1 unable to be explained or accounted for.”for some inexplicable reason CP’s mind went completely blank”
2 synonyms:
unaccountable, unexplainable, incomprehensible, unfathomable, impenetrable, insoluble; baffling, puzzling, perplexing, mystifying, bewildering, confusing; mysterious, strange