strapless
/ˈstræplɪs/Definitions
1. adjective
having or provided with no strap to secure or support something.
“The strapless dress was a perfect choice for the summer wedding.”
2. adjective
not needing or using a strap to secure or support something.
“The new design of the backpack was strapless, making it easier to carry.”
3. noun
a dress or other garment that has no straps to secure it.
“She wore a strapless evening gown to the awards ceremony.”