Suggestive of death:
(Computing) Causing a sudden end to the running of a program.
Causing or capable of causing harm; injurious.
Of a performance or speech, in person.
(Medicine) Tending to metastasize:
The definition of dangerous is something that is potentially harmful, damaging or likely to cause an accident or injury.
Poisonous or poisoned
Capable of causing injury or death, especially by chemical means; poisonous:
Not intended to harm or offend; inoffensive.
Free from danger or injury; undamaged or unhurt:
Providing assistance; useful.
The definition of deathly is something that is related to or likely to cause death.
Containing life; living.
Find another word for lethal. In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for lethal, like: deadly, mortal, fatal, harmful, live, malignant, poisonous, dangerous, poison, toxic and harmless.