The crossword solution for the term 'OLD-FASHIONED WORD OF DISAPPROVAL' is FIE, a three letter word. Fie is an old-fashioned word of disapproval that is used to express strong disapproval or contempt. It is often used in literature and poetry to express strong emotions such as anger or disappointment. The word is derived from the Middle English word 'fien, ' which means to be ashamed or to feel regret.