B2adjective2K

Deadly

UK /["/ˈdedli/"]/US /["/ˈdedli/"]/

Definition

causing or likely to cause death

In simple words: causing or capable of causing death

Examples

  • The snake's venom is deadly and can cause severe symptoms within minutes.
  • Deadly diseases like Ebola require strict quarantine measures to prevent outbreaks.
  • The competition was deadly serious with no room for mistakes.
  • She gave a deadly glare to anyone who disturbed her peace.
  • It was a deadly dull lecture that made everyone want to fall asleep.

Usage notes

Use 'deadly' to describe things that can kill, like diseases or poisons. Avoid using it casually; it sounds serious and should not be used for light situations.

Grammar pattern

standalone adjective

Memory hint

Think of 'dead' + 'ly' as something that can lead to death.

Collocations

  • deadly weapon
  • deadly poison
  • deadly disease
  • deadly force
  • deadly smile

Synonyms

  • lethal

Antonyms

  • harmless
  • safe
  • non-lethal

Common mistakes

  • Confusing 'deadly' with 'deathly' which has a different meaning.
  • Using 'deadly' when describing something non-lethal like a game or competition.