The phrase "packing it in" refers to giving up or quitting, but what are some antonyms for this expression? One opposite could be "persevering" which means to keep going despite difficulties. Another antonym is "persisting" which means to continue striving towards a goal or objective. Additionally, "pushing through" could also serve as an antonym which means to endure and remain resolute when faced with challenges. Finally, "staying the course" is another antonym for "packing it in" which means remaining committed to one's actions or decisions even when the going gets tough. Overall, while "packing it in" implies giving up, these antonyms demonstrate the importance of perseverance and persistence.