Слово "affirm". Англо-русский словарь Мюллера

“You jes’ bet they will,” Bill affirmed. “If one of em’ turns up missin’, I’ll go without my coffee.”

Those stern, immitigable features seemed to symbolise an evil influence, and so darkly to mingle the shadow of their presence with the sunshine of the passing hour, that no good thoughts or purposes could ever spring up and blossom there. To the thoughtful mind, there will be no tinge of superstition in what we figuratively express, by affirming that the ghost of a dead progenitor—perhaps as a portion of his own punishment—is often doomed to become the Evil Genius of his family.

we found that people who had affirmed themselves first

are affirming compassion and the golden rule as fundamental principles

"I should affirm the culpability."

and curiosity affirms it.

“It would do,” I affirmed with some disdain, “perfectly well.