Doublechecking is a process of verifying information or data to ensure its accuracy. As there are no direct antonyms for the word doublechecking, we can use words that imply the opposite. Words that represent the opposite of doublechecking may include "negligence," "carelessness," or "overconfidence." Negligence refers to the failure to take adequate care. Carelessness is a lack of attention to detail, while overconfidence denotes a sense of assurance or daring that may lead to errors. To avoid mistakes, it is essential to practice the act of doublechecking to ensure accuracy, while letting go of negligeance, carelessness, and overconfidence.