The word "nonheaded" refers to something or someone without a head or leader. There are several synonyms that can be used in its place, such as leaderless, headless, unheaded, unguided, rudderless, directionless, and without a captain. These words depict a situation, group or an individual that lacks direction or guidance. Depending on the context in which the word is being used, these synonyms can be substituted to give the sentence a different meaning or emphasis. In any case, each of these words refers to the absence of a person or entity that is typically responsible for leading, guiding, or directing others.