Archaic To make or become great or greater. (verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "greaten" in a sentence
"And while the whole face was the incarnation of fierceness and strength, the primal melancholy from which he suffered seemed to greaten the lines of mouth and eye and brow, seemed to give a largeness and completeness which otherwise the face would have lacked."
"I had decided to manipulate and pretend I was really hurt, that would greaten their concern for me and lessen their anxiety about the dirt bike and the truck. . ."
"So he lifted up his hands to heaven and said, “O Allah, greaten my yard and magnify it.”"