The Clue Droop, as a flower in an old bouquet
The Answer WILT
The word "wilt" means to become limp or droop, which is what happens to flowers when they are no longer fresh. An old bouquet often has flowers that have lost their vitality, causing them to wilt. This makes "wilt" a perfect fit for the crossword clue about a flower in an old bouquet. It captures the idea of flowers losing their strength and beauty over time.