Osiered is an adjective that refers to something that is composed of or covered in osiers, which are slender rods or twigs of willow trees used in basketry. Synonyms for osiered include "wicker", "reedy", "twiggy", "basketry", and "willowy". These words can be used to describe the appearance or composition of objects or materials, such as baskets, fences, or plants. They can also be used figuratively to describe the characteristics or qualities of a person or situation, such as being flexible or adaptable. Overall, these synonyms provide a range of descriptive options for the word "osiered" that can help to add variety and nuance to writing.