Etymology
From Latin assertōrius, from asserō (“assert”).
Adjective
assertory (comparative more assertory, superlative most assertory)
- (archaic) assertoric
1678, Antiquitates Christianæ: Or, the History of the Life and Death of the Holy Jesus: […], London: […] E. Flesher, and R. Norton, for R[ichard] Royston, […], →OCLC:But these oaths were with men, we must promise by simple testimony, not only assertory
1823, Jeremy Bentham, Not Paul, But Jesus:an assertory, not a promissory, declaration
c. 1858, William Hamilton, Lectures on Logic:A proposition is called Assertory, when it enounces what is known as actual;