treacherous

Huge metal containers – broken free from their articulated lorries – rested at unfathomable angles amid a jumble of cars, crumpled furniture and treacherous mud.

Thursday, when Gov. Gavin Newsom declared a state of emergency in Ventura County to mobilize resources to combat the treacherous blaze.

The pilot of a small plane that crashed on Santa Catalina Island, killing five, was warned not to take off in treacherous conditions after dark.

Max Verstappen produced a superb drive to win the Sao Paulo Grand Prix on Sunday, coming through the field from 17th on the grid in treacherous conditions.

In treacherous conditions, Verstappen was in a league of his own, putting in a drive that underlined why he is regarded by so many in Formula 1 as the best driver in the world.