erratic

He's always been hateful and erratic, and it's clearly getting worse as he approaches 80 years old.

Water pressure in some areas also became erratic, forcing crews to shuttle water up to some key positions in the firefight — though it is still not clear what effect that might have had.

Despite Richardson’s erratic behavior, sheriff’s deputies at the station had “no legal justification to deprive her of her freedom,” according to the report.

More tellingly still, historian Christopher R. Browning, writing in the New York Review of Books, describes how wealthy, reactionary German elites anticipated that they'd be able to profit from, but also control, Adolf Hitler’s alarming if erratic demagoguery.

That testimony came after publication of the book “Peril” — by reporters Bob Woodward and Robert Costa — which said that Milley was worried at the time about the potential for erratic behavior by the departing president.