The antonyms for the word "most anchored" would be "least anchored" or "unanchored". While being anchored usually refers to being secure, stable, and firmly planted, being unanchored is the opposite, meaning to lack stability or foundation. The level of anchoring can vary for different situations, such as a ship being anchored down during a storm, or a person feeling grounded in their beliefs and values. However, in any case, an antonym for "most anchored" would suggest a lack of stability or grounding. It is important to strive for balance and anchoring in life to avoid feeling lost or adrift.