There are plenty of antonyms or opposites for the term "dead weights," which can be described as heavy, lethargic or unproductive entities, ideas or objects. Some antonyms can be "stimulants," "motivators," "energizers," "inspirations," "catalysts," or "propellers". These terms all refer to something or someone that initiates action or motivates others to move forward. Other antonyms may include "lightweights," "barely-there," or "nimble," which describe something or someone that is light, quick, agile, or easy to handle. The key takeaway here is that every negative term can be countered with a positive one, so it is always possible to find alternatives that suit your needs.