Inexplicable
Inexplicable , adjective
[Latin inexplicabilis: compare French inexplicable. See In- not, and Explicable.]
Not explicable; not explainable; incapable of being explained, interpreted, or accounted for; as, an inexplicable mystery.
An inexplicable scratching.
Their reason is disturbed; their views become vast and perplexed, to others inexplicable, to themselves uncertain.