Incogitance
Pronunciation : In*cog"i*tance, In*cog"i*tan*cy
Part of Speech : n.
Etymology : [L. incogitantia.]
Definition : Defn: Want of thought, or of the power of thinking; thoughtlessness; unreasonableness. 'T is folly and incogitancy to argue anything, one way or the other, from the designs of a sort of beings with whom we so little communicate. Glanvill.
Source : Webster's Unabridged Dictionary, 1913