Hi, can't parse 4 down...Not an item of underwear for Balls to adorn (9).
I have O_E_D_E_S and can only think of Overdress (as indeed can the Quick Solve feature on this website). An overdress could be "not an item of underwear" I suppose, and "to overdress" could be "to adorn", but "Balls" in Eyeland is usually an anagrind, or "Ed", or more than one letter O or a word meaning "rubbish". Please put me out of my misery - what am I missing?