The antonyms for the word "most outstretched" can be gathered as words that represent opposite meanings to the original word. Some of the antonyms that could be used for the word "most outstretched" are shortest, tiniest, narrowest, smallest, closed, contracted, etc. The word "shortest" describes something that has little to no length, while "narrowest" refers to something which is not wide. On the other hand, "closed" and "contracted" are related to a situation where something remained closed, restricted or bound. In general, antonyms can be used to describe the opposite characteristics of something, which can help to convey a clear and precise idea about a particular subject in a sentence.