The Collaborative International Dictionary
Asseverate \As*sev"er*ate\, v. t. [imp. & p. p. Asseverated; p. pr. & vb. n. Asseverating.] [L. asseveratus, p. p. of asseverare to assert seriously or earnestly; ad + severus. See Severe.] To affirm or aver positively, or with solemnity.
Syn: To affirm; aver; protest; declare. See Affirm.
Wiktionary
vb. (en-past of: asseverate)
Usage examples of "asseverated".
This, however, seemed to Teddy too much to pay, so, when the time of reckoning came, he stoutly asseverated that there were but sixty packages.
Toogood asseverated that there was no such thing as surplus population, and that the land, properly managed, would maintain twenty times its present inhabitants.
It was to no purpose that the widow Masson repeated and asseverated that she recognised him as her tenant Ducoudray, and that he had had a large case of wine taken down into the cellar.
Much was the ridicule heaped upon the hopeful, trustful ones, who declared and repeatedly asseverated to the contrary.