The word doublechecked suggests the act of verifying something twice in order to ensure accuracy. Its antonyms, on the other hand, imply the opposite intention. Words like careless, negligent, hasty, and forgetful denote a lack of attention or disregard for precision. These antonyms are often associated with laziness or incompetence, both of which can lead to errors and mistakes. In general, the importance of double-checking cannot be overstated, especially in critical matters such as medical procedures, financial transactions, or legal documents. By being mindful of its antonyms, we can recognize the importance of taking the time to review and verify important information.