erratic
irregular or unpredictable
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
- err: to make a mistake or go wrong
- errant: wandering, straying, or behaving wrongly
- error: a mistake or departure from correctness
Erratic movement wanders without a steady path.
His erratic sleep schedule made every practice test harder.
Erratic is wandering turned into pattern. A car, mood, schedule, or argument goes here, then there, with no reliable line to follow.