The antonyms for the word "most unallied" are quite simple to understand. The word "allied" means to be connected or related in some way, whereas the word "unallied" means the opposite- to be disconnected or unrelated. The antonyms for "most unallied" would then be words that mean "most allied" or "most connected." Such words include "related," "connected," "associated," "attached," and "allied." These words are often used to describe relationships between people, groups, or things. For example, two countries that have strong economic ties are said to be "allied," while two people who are deeply in love are "connected" emotionally.