|inē|narəbəl adjective
Etymology: Middle English, from Middle French inenarrable, from Latin inenarrabilis, from in- in- (I) + enarrabilis capable of being explained, from enarrare to explain in detail + -abilis -able — more at enarration
: incapable of being narrated : indescribable , ineffable
inenarrable mystery of artistic creation — N.E.Nelson