The antonyms for the phrase "haddest get together" are numerous and varied. Opposite meanings could include phrases such as "did not gather," "no assembly," or "solo mission." Other antonyms might also include "separated," "dispersed," or "scattered to the winds." Depending on the context of the original phrase, there could be many different meanings implied by the antonyms, ranging from a lack of socialization or bonding to a sense of isolation or disconnectedness. Regardless of the specific words chosen, antonyms for "haddest get together" serve as a reminder that sometimes, it's okay to be alone.