Unstick means to free something from being stuck or fixed in one place. There are several synonyms for this word, including unstuck, unglue, disentangle, dislodge, detach, and release. Unstuck refers to removing an object from a fixed position, while unglue is typically used for separating two glued surfaces. Disentangle is used when something is entwined or tangled, and dislodge is used when something is stuck or lodged in a narrow space. Detach refers to removing something from a larger structure, and release is used when something is released from a grip or grasp. All of these words have slightly different meanings, but they can all be used to convey the idea of freeing something that is stuck.