The word "slavest" has a negative connotation as it refers to being completely controlled or dominated by another person or group. Synonyms for this word include "subjugated," "enslaved," "oppressed," "dominated," "under the thumb," "subjected to," "subordinated," "controlled," and "manipulated." Each of these synonyms highlights the idea of being powerless and without agency, often in relation to someone or something that holds power over them. While these words may have different shades of meaning, they all convey the sense of being at the mercy of another's will.