verb,improve or enhance the quality or value of. enrich verb (IMPROVE) to improve the quality of something by adding something else: Fertilizer helps to enrich the soil. Enrich definition is - to make rich or richer especially by the addition or increase of some desirable quality, attribute, or ingredient : such as. to supply with abundance of anything desirable: to enrich the mind with knowledge. Enrich definition: To enrich something means to improve its quality, usually by adding something to it. verb · 1Improve or enhance the quality or value of.