erratically

Adverb

1. In an erratic manner; unsteadily or randomly, unpredictably.
   • When I saw the other driver weaving erratically across the road, I decided to keep my distance.
   • The four-and-one-half-day trial was centered on acts that neither she nor prosecutors dispute: On July 13, 2012, she drove her Lexus S.U.V. erratically after swallowing Zolpidem, a generic form of the sleep medication...