The phrase "most outspread" refers to something that is extended, stretched, or widespread to a great extent. Some antonyms for this phrase could be "compact," "restricted," "narrow," or "constrained." These words imply a sense of limitation, confinement, or restriction. An antonym for "most outspread" could also be "condensed" or "compressed," suggesting something that is tightly packed or condensed into a smaller space. Other antonyms that come to mind are "retracted," "withdrawn," or "contracted," which indicate a lessening or reduction in size, scope, or influence. Ultimately, the choice of antonym depends on the context in which the phrase is used.