"Letted down hair" is a phrase often used to describe a woman's hair that has been released from a bun or braid. However, there are many synonyms for this phrase that can be used to add variety to your writing. Some examples include "loose locks," "flowing tresses," "unraveled mane," "unbound curls," and "cascading strands." Each of these synonyms paints a slightly different picture of the hair in question, from the playful bounce of "unbound curls" to the graceful elegance of "flowing tresses." By using these alternative phrases, you can add depth and nuance to your writing, while avoiding repetition.