Simple past tense and past participle of greaten.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "greatened" in a sentence
"How often had we talked large (we were very young!) of our sublimities and potentialities, how often had we pictured tragedies of sur render and greatened in the speaking!"
"They were good blankets, of most marvellous thickness and warmth, and her pride in them was greatened in that they had been come by so cheaply."
"Then he greatened his turband172 and sat down at the door of the school; and when the people, who passed by, saw his huge head-gear and tablets and scrolls, they thought he must be a very learned pedagogue; so they brought him their children; and he would say to this, “Write,” and to that “Read”; and thus the little ones taught each other."