asseverative adjective 2noun 1forms 3 adjective2 •Characterized by asseveration; asserting positively. •Serving to emphasize the certainty or truth of a statement.Further, it is strongly possible that the emphatic or asseverative lamed is etymologically distinct from the preposition, though the Masoretes do not distinguish the two. — 1990 noun1 •A linguistic structure that serves to emphasize the certainty or truth of a statement. formsasseveratives · more asseverative · most asseverative