Determined not to let her mind wander in that erratic fashion again, she returned her attention to the work at hand.
"The Foreign Hand Tie"
Gordon Randall Garrett
The berg lost its erratic movement, and soon settled in a fixed position.
"My Attainment of the Pole"
Frederick A. Cook
Thorne was somewhat erratic by nature, and any insistence on the strictly conventional point of view, even when it was backed by sound sense, usually acted upon him as a red rag.
"A Prairie Courtship"
Harold Bindloss