unexplained
un-ex-plained
adjective
Not accounted for or understood; lacking a clear reason or cause.
"The strange lights in the sky remained unexplained."
Thesaurus
Synonyms: undetermined, incomprehensible, inexplicable
un-ex-plained
Not accounted for or understood; lacking a clear reason or cause.
"The strange lights in the sky remained unexplained."
Synonyms: undetermined, incomprehensible, inexplicable