deadly

causing or able to cause death; very dangerous

letal, mortal, letalmente peligroso

• a deadly disease/injury/weapon

Collocations deadly disease · deadly weapon

• The virus is a deadly threat to public health.

  El virus es una amenaza letal para la salud pública.

very bad or unpleasant; extremely serious or dangerous

muy malo, terriblemente peligroso

• a deadly argument/row

Collocations deadly serious · deadly boring

• The situation is deadly serious.

  La situación es extremadamente seria.

very effective or successful; extremely good at achieving a particular result, especially one that causes harm or damage

eficaz, muy efectivo

• a deadly blow/attack

Collocations deadly accurate · deadly effective

• The boxer landed a deadly blow to his opponent's jaw.

  El boxeador conectó un golpe mortal en la quijada de su oponente.