The word "out-stretching" suggests an action that involves extending something beyond its normal limits. Antonyms for this word, on the other hand, would refer to actions that either restrict or limit something. Some possible antonyms for out-stretching include shortening, contracting, restraining, confining, curbing, and limiting. These words all describe actions that bring something closer or reduce its extent, rather than extending it. For example, shortening a piece of fabric or contracting a muscle would have the opposite effect of out-stretching. By using antonyms for out-stretching, we can precisely describe the range of actions and movements of various objects or physical sensations.