The term "be slaver" means to dribble or drool excessively from the mouth, often as a result of physical or emotional stress. Antonyms for this term may include words such as "restrain," "refrain," "abstain," and "control." These words imply a sense of suppressing or holding back bodily fluids or emotions that might otherwise result in slavering. Additionally, words such as "clean," "tidy," or "neat" might be considered synonyms, as they imply an absence of drooling or excess saliva. Ultimately, the antonyms for "be slaver" are those that suggest restraint, control, and cleanliness.