Crowbarred means to forcibly open something using a crowbar. The antonyms for the word crowbarred would be to close, shut, lock or latch. If you are trying to describe the opposite of using a crowbar to open something, you could use words such as gently closed, securely locked, or properly latched. Alternatively, if you want to describe a situation where something was not opened with force, you could use words such as easily accessible, readily available or openly accessible. Whatever the situation may be, using the appropriate antonym will ensure that your message is clear and concise.