ERRATIC
erratic
Noun
- A rock moved from one location to another, usually by a glacier.
- Anything that has erratic characteristics.
Adjective
- unsteady, random; prone to unexpected changes; not consistent
- Henry has been getting erratic scores on his tests: 40% last week, but 98% this week.
- Deviating from the common course in opinion or conduct; eccentric; odd.
- erratic conduct
The above text is a snippet from Wiktionary: erratic
and as such is available under the Creative Commons Attribution/Share-Alike License.