ingeminate
To say (a statement, word etc.) two or more times; to reiterate, to emphasize through repetition.
transitive
we found a black pavillion; in it three old Arabians; who, out of their Alcoran ingeminated a dolefull requiem to their Brothers carcasse, over which they sat […]
Where it comes from
Borrowed from the participle stem of Latin ingeminō (“repeat, reiterate”).
Adapted from the Wiktionary entry ingeminate (CC BY-SA 4.0).