Regret Ceiling Share definition Flag (noun) - The point at which one stops feeling remorseful regarding a thought, comment or action. I hit the regret ceiling last night regarding my comment toward Jody's weight several weeks ago. Her fat ass just needs to get over it. Regret Ceiling by ITALUS September 7, 2011 Word of the Day on September 9, 2011 Get the Regret Ceiling mug.