to declare earnestly or solemnly; affirm positively; aver.
Get the Word of the Day Email
Citations for asseverate
He asseverates that it was all a joke., "Babblings," The Capital, Volume XI, June 9, 1900
I asseverate that, during my occupation of Master B.'s room, I was taken by the ghost that haunted it, on expeditions fully as long and wild as any of those.Charles Dickens, "The Haunted House," All the Year Round, 1859
Asseverateis formed from asseverat-, the stem of assevērātus, the past participle of the Latin verb assevērāre “to act or speak seriously or in earnest.” (The Latin adjective sevērus means “serious, grave”). The word entered English in the 18th century, replacing the earlier verb assever.