[kuh n-kloo-suh-ree]

Origin of conclusory

First recorded in 1840–50; see origin at conclusive, -ory1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for conclusory

1846, "pertaining to a conclusion," from stem of conclusion + -ory. Probably coined because the secondary "decisive" sense had come to predominate in conclusive.

Online Etymology Dictionary, © 2010 Douglas Harper