err
to make a mistake or go wrong
Root
- err / errare: wander, stray, or go off course
Other words with the err / errare root
- aberrant: departing from the usual course
- aberration: a departure from what is normal or expected
- errant: wandering, straying, or behaving wrongly
- erratic: irregular or unpredictable
- error: a mistake or departure from correctness
To err is to stray from the right path or answer.
To err once is human; to ignore the pattern is expensive.