Inexplicable
Pronunciation : In*ex"pli*ca*ble
Part of Speech : a.
Etymology : [L. inexplicabilis: cf. F. inexplicable. See In- not, and Explicable.]
Definition : Defn: Not explicable; not explainable; incapable of being explained, interpreted, or accounted for; as, an inexplicable mystery. "An inexplicable scratching." Cowper. Their reason is disturbed; their views become vast and perplexed, to others inexplicable, to themselves uncertain. Burke.
Source : Webster's Unabridged Dictionary, 1913