Error/ˈerər/ Definition 1 of 5Pro Tip 1/2Common Occurrences The word 'error' often refers to common mistakes in everyday life. Sorry, typing your name wrong was an error on my part. Pro Tip 2/2Human Imperfection 'Error' implies a lapse in perfection, acknowledging that mistakes can happen. The chef admitted the salty dessert was due to an error.