rare. [f. thought, pa. pple. of THINK v.2 + -NESS.] The fact or quality of being thought or mentally discerned.
1865. J. Grote, Explor. Philos., I. 140. I recognise two manners of existence,… thinkingness and thoughtness, and it is the latter which, when we believe the thought correct or justified, we call phenomenal existence or matter.
1905. Athenæum, 11 March, 306/3. In the dead-alive fashion of the functions of a thinking apotheosized as a thoughtness.
