Lethal: meaning, definitions and examples

Use when describing something that can cause death or is capable of causing death. Typically used in a more clinical or formal context.

• The poison was found to be lethal in even small doses.
• Certain chemicals can have lethal effects if not handled properly.

Best used when describing something that has caused death or has the potential to cause death. Often used in medical or serious contexts.

• The accident resulted in a fatal injury.
• She made a fatal mistake during the surgery.

Best used when describing something extremely dangerous or likely to cause death. It can be used in everyday language as well as in more dramatic contexts.

• The deadly virus spread rapidly through the city.
• He carried a deadly weapon.

Generally used to describe something that can cause death in a more literary or poetic sense. Sometimes used to describe human vulnerabilities.

• A mortal wound took his life quickly.
• Every human is mortal.

Used when something can cause death or is extremely dangerous.

• This snake's venom is lethal.
• Driving under the influence can have lethal consequences.

Best used to describe something that causes a lot of emotional pain, destruction, or serious damage.

• The news of his passing was devastating.
• The hurricane left a devastating impact on the coastal community.

Appropriate for describing major disasters or events that cause great suffering or damage.

• The earthquake had catastrophic effects on the city.
• A catastrophic failure of the dam led to severe flooding.

Suitable for describing something that leads to severe financial loss or physical destruction. Often has a negative connotation.

• The investment turned out to be ruinous for the company.
• The ruinous effects of the war were visible everywhere.