← BackshareGuessovermature/ˌoʊvərˈməˈtʃʊr/adjectiveToo mature; past the point of ideal ripeness or development.The cheese was overmature and had a very strong, sharp flavor.The overmature bananas were perfect for banana bread.The forest had many overmature trees that were beginning to decay.SynonymsdecayedoverripeAntonymsunderripeimmature