Flutter down is a descriptive term used to describe the movement of something falling gently, like a leaf from a tree. However, there are several synonyms for this phrase that could add variety and interest to your writing. Some of the synonyms for flutter down include float down, drift down, waft down, and settle gently. Each of these words can convey a slightly different image and feeling, whether it's the lightness of floating or the subtlety of settling. Experimenting with different synonyms for flutter down can help you find the perfect description for your writing.