Lethally

The doctor administered a lethally high dose of medication.

The hurricane caused lethally high winds and flooding.

He wielded a lethally sharp knife, and the slightest mistake could prove fatal.

The criminal was armed with a lethally sharp knife.

The faulty wiring in the old building made it a lethally unsafe place to live.

The malfunctioning machine posed a lethally hazardous threat to workers.

Drinking bleach can be lethally harmful to your health.

The chemicals used in this factory are lethally toxic.

Driving under the influence of alcohol can have lethally dangerous consequences.

The car's speed and weight made it a lethally dangerous weapon on the road.

The shark attack was a lethally dangerous situation.

The weapons in the hands of terrorists were lethally dangerous.

The hurricane caused lethally strong winds and heavy rain.

The storm caused a lethally strong wind that uprooted trees.

The level of pollution in the river was lethally harmful to aquatic life.

The terrorist's plot was lethally deadly and posed a threat to national security.

The chemicals in the laboratory were lethally toxic if not handled with care.

The height of the cliff was lethally dangerous to jump from.

The radiation from the nuclear reactor was lethally harmful.

The virus was lethally contagious and caused many deaths.

The chemical plant had a lethally toxic spill into the river.

The bomb squad was called in to deal with the lethally explosive device.