erratic
/ɪˈɹætɪk/ noun C2- A rock moved from one location to another, usually by a glacier.
- Anything that has erratic characteristics.
Plural erratics
From the library
But that Mycroft should break out in this erratic fashion!
“And now,” said he, “it really would be a good thing that we should all go over the house together and make certain that this rather erratic burglar did not, after all, carry anything away with him.”
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