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Deadly

adjective

/ˈded.li/

Meaning

causing or able to cause death; extremely dangerous; lethal

The deadly poison killed the plant instantly.

lethal, fatal, dangerous, poisonous

harmless, safe, beneficial

deadly weapon, deadly disease, deadly serious

unimpressed or indifferent to something because it has been experienced so often before

easily frightened or nervous; unpredictable

tiresome because of length or dullness; boring and monotonous

awake and conscious; relating to the time when one is awake

divided into two sharply contrasting groups or opinions

not polite or courteous; rude and discourteous in behavior