If the ping fails, the event may be escalated to a severe level, to indicate that a more important issue requires resolution.

It's a very severe level of habitat loss.

Antenatal depression is often caused by the stress and worry that pregnancy can bring, only at a more severe level.

The event is eventually classified as a level 7, the most severe level of disaster on the international nuclear event scale.

In university research, Imidacloprid treated trees only survived the most severe level of infestation when treated at the 2X rate.

The revised estimates suggest that stocks of gasoline, while still quite low, have not fallen to the severe levels previously anticipated.

Cyclone Yasi is currently a Category 5 storm - the most severe level.

He competed in category 1A (wheelchair marathon for athletes with the most severe level of disability).

Many Romanians, inured by a tough past, were willing to suffer severe levels of poverty, he suggested.

I would like to draw your attention to the fact that the defencelessness of some Member States even exceeds this severe level.