The phrase "stands in good stead" means to be advantageous or beneficial for an individual or situation. Antonyms for this term include: detrimental, disadvantageous, harmful, hurtful, and damaging. For instance, if an employee lacks essential skills for a job, it might prevent them from a promotion that would stand in good stead for their future prospects. The inability to control one's temper or anger could be harmful to relationships, instead of standing in good stead. Failing to take action in a timely manner might be disadvantageous in critical situations. Therefore, it is imperative to steer clear of actions that could be damaging, hurtful or detrimental, and to make sound decisions.