Excrescency refers to an abnormal growth or outgrowth, but its antonyms are the opposite of the same. The antonyms of excrescency include regularity, normality, simplicity, and regularcy. These words denote the normal or regular state of things or a lack of abnormal growth or unusual development. Whereas excrescency describes something that is uncharacteristic or an anomaly in growth or appearance, its antonyms are words that define the standard or typical state of a condition or object. By using these antonyms, we can describe things that are free of bumps, growths, or irregularities and that fit easily into the expected norms of a situation or environment.