The antonyms for the word "busted open" can be "closed shut", "sealed tight", "securely fastened", "locked", and "intact". These antonyms denote a state where there is no opening or breakage, ensuring complete protection and safety. They are often used in the context of doors, windows, containers, or packages that need to be kept safe and secure. The antonyms of "busted open" also imply a sense of order and control, delineating clear boundaries and barriers. On the other hand, "busted open" connotes a sense of chaos, disruption, or even danger, suggesting a state of vulnerability and uncertainty.