Hyperextensible refers to an ability to extend or stretch beyond the usual range of movement. Synonyms for hyperextensible may include terms such as flexible, stretchy, supple, pliable, elastic, bendable, and malleable. These words encompass the idea of being able to move or stretch beyond what is typically expected or possible. Additionally, synonyms may include terms like adaptable, versatile, or accommodating which suggest the ability to adjust or adapt to different situations or circumstances. All of these synonyms offer alternative ways of describing the same concept of having an exceptional ability to extend, stretch, or move.