Historical Examples. 1  He had a double chin and a smile which was apologetic but ingratiating. 2  Diana moved nearer to him, with her prettiest and most ingratiating air. 3  He tried to twist his seamed 288 features into an ingratiating grin, but the effort was a failure, producing only a grimace.
not righteous; not upright or virtuous; wicked; sinful; evil: an unrighteous king. 2. not in accordance with right or justice; unfair or unjust: an unrighteous law. Origin of unrighteous.
Full Definition of SPONTANEOUS. 1. : proceeding from natural feeling or native tendency without external constraint. 2. : arising from a momentary impulse.3. 4. : produced without being planted or without human labor: indigenous. 5. The comment was completely spontaneous. 2  He's a guy who's spontaneous and fun. 3  Shane has a lovely habit of paying us spontaneous visits: one time she brought over a jar of a pickle she'd recently put up; another time just a good story or two.