mildewy

the word 'mildewy' is a modern english adjective formation built upon the noun 'mildew'. the noun 'mildew' itself has a long history, originating from the old english 'mildeaw', meaning 'honeydew' or a sticky substance secreted by aphids, which was later associated with fungal growth on plants. this old english term is a compound of 'mele' (honey) and 'deaw' (dew), literally describing a sweet, dew-like substance. by adding the productive adjectival suffix '-y', which denotes 'having the qualities of', the word 'mildewy' directly and logically describes something characterized by the presence of mildew.

Structure: mildew + y mildew (from middle english 'mildew', meaning a harmful fungal growth) + y (a suffix of old english origin used to form adjectives meaning 'characterized by' or 'full of').