Precociousness
Pronunciation : Pre*co"cious*ness, Pre*coc"i*ty
Part of Speech : n.
Etymology : [Cf. F. pr?cocit?.]
Definition : Defn: The quality or state of being precocious; untimely ripeness; premature development, especially of the mental powers; forwardness. Saucy precociousness in learning. Bp. Mannyngham. That precocity which sometimes distinguishes uncommon genius. Wirt.
Source : Webster's Unabridged Dictionary, 1913