Temperancy refers to the act of displaying self-control or moderation, particularly in relation to alcohol or other indulgences. Antonyms for this word would, therefore, be those concepts that are the opposite of self-control, such as excess, indulgence, and impulsive behavior. Additional antonyms could include words such as recklessness, intemperance, and gluttony. These concepts all represent a lack of restraint or discipline, which stands in opposition to the idea of temperancy. While temperancy is generally viewed as a positive trait or behavior, those who gravitate towards these antonyms may struggle with addiction, substance abuse, or other self-destructive tendencies.