Imperscrutable
Pronunciation : Im`per*scru"ta*ble
Part of Speech : a.
Etymology : [L. imperscrutabilis.]
Definition : Defn: Not capable of being searched out; inscrutable. [Obs.] -- Im`per*scru"ta*ble*ness, n. [Obs.]
Source : Webster's Unabridged Dictionary, 1913