aver

verbs

report or maintain

"He alleged that he was the victim of a crime"; "He said it was too late to intervene in the war"; "The registrar says that I owe the school money"

allege, aver, say

to declare or affirm solemnly and formally as true

"Before God I swear I am innocent"

affirm, assert, aver, avow, swan, swear, verify

is derived from