Learn how to say Mouldiness correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word mouldy:
adjective (mouldier, mouldiest; US moldier, moldiest)
1covered with a fungal growth which causes decay, due to age or damp conditions:
2 informal tediously old-fashioned:
chiefly British dull or depressing:
evenings filled with mouldy old shows