The phrase "does bit" essentially means to perform or accomplish something, but what are some antonyms or opposite words that could apply? Some possibilities might include: not doing enough, falling short, failing, underperforming, neglecting, avoiding, or ignoring altogether. Depending on the context of the situation, there could be many different ways to describe the opposite of "doing a bit." For example, in a work setting, the opposite might be to procrastinate, waste time, or be unproductive. In a personal relationship, the opposite could be to criticize, neglect, or hurt someone's feelings. Overall, the antonyms for "does bit" will depend largely on the specific circumstances and what would be considered the opposite action.