The antonyms for the phrase "hadst a get-together" could be described as situations where people are not gathering together. Some possible antonyms may include words or phrases like "solitude," "isolation," "seclusion," "loneliness," or "aloneness." Other antonyms may include words like "division," "separation," "discord," "estrangement," and "alienation." These words and phrases suggest a lack of social interaction or the presence of negative emotions between individuals or groups. In contrast, the phrase "hadst a get-together" usually implies a positive social gathering where people come together to enjoy each other's company, share stories, and build connections.