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deadly

When used as an adjective, "deadly" usually refers to something that can kill you (like a poison). However, it is also often used to describe someone who is very skilled or precise in a way that feels dangerous. When used as an adverb, it is most commonly paired with words like "dull," "boring," or "serious." In this case, it doesn't mean death; it just means "extremely" or "very."

💬Casual Conversation

🎬Tuesday afternoon, Jessica is in a high-stakes board meeting while Mark is hiding in the breakroom.
Jessica

The silence after I asked for the report was deadly. Where are you?

Jessica
Mark
Mark

my bad, totally blanked on that. just grabbing a snack.

💡
Jessica uses 'deadly' as an adjective to describe an intense, oppressive silence that creates extreme social tension. Mark responds with 'my bad' (slang for apology) and 'blanked on' (phrasal verb meaning forgot), highlighting the contrast between her anxiety and his indifference.

Meanings

adjective

Capable of causing death; lethal.

"The cobra possesses a deadly venom that can paralyze its prey."

adjective

Extremely accurate, effective, or intense.

"She threw the ball with deadly precision, hitting the target perfectly."

adverb

To an extreme degree; completely (often used to describe boredom).

"The lecture was deadly dull, and half the students fell asleep."

Last Updated: May 23, 2026Report an Error