From Longman Dictionary of Contemporary Englishoverripeo‧ver‧ripe /ˌəʊvəˈraɪp◂ $ ˌoʊ-/ adjective overripe fruit and vegetables are past the point of being ready to eat and are too soft overripe bananas
Examples from the Corpus
overripe• If allowed to go overripe, barley ears tend to fall off the stems, and heavy losses can occur.• His hoard is overripe for commerce.• Also, you really, really need to go to the bathroom; your bladder is pressing within like an overripe melon. 