ardent adj. Burning with passion. detrude v. To push down forcibly. rebuff n. A peremptory or unexpected rejection of advances or approaches. unctuous adj. Oily. cereal adj. Pertaining to edible grain or farinaceous seeds. avow v. To declare openly. ominous adj. Portentous. onrush n. Onset. harangue n. A tirade. navel n. The depression on the abdomen where the umbilical cord of the fetus was attached..