Passing up generally means missing out on something or ignoring an opportunity. Antonyms for passing up can be seizing an opportunity, taking advantage of something, or grabbing a chance. Other antonyms could include accepting, embracing, or embracing a situation. The opposite of passing up can also be pursuing, chasing, or actively seeking something. It is essential to pay attention to what one might be passing up as it could lead to regret and missed opportunities. Therefore, it is always recommended to consider the antonyms of passing up and make better decisions to avoid missing out on great opportunities.