adjective
- unpredictable in behavior or movement; inconsistent
- deviating from the usual or proper course
Examples
- The patient’s erratic heartbeat concerned the doctor.
- Her erratic driving made passengers nervous.
- The stock market showed erratic behavior last week.
- His erratic work schedule made it hard to plan meetings.
- The weather has been particularly erratic this spring.
- The machine’s erratic performance indicated it needed repair.