erratic
US /ɪˈrætɪk/
・UK /ɪˈrætɪk/
B2
adjective
- Not acting in a regular/planned way; unpredictable
- Unpredictable; irregular
- Moving or behaving in a way that is not regular, certain, or expected.
- Not consistent; subject to unpredictable changes.
- Not regular or consistent; intermittent.