Synonyms: deadly
Definition: (of a disease) having a rapid course and violent effect
Similar words: virulent
Definition: infectious; having the ability to cause disease
Synonyms: mortal, deadly, deathly
Definition: causing or capable of causing death
Usage: a fatal accident; a deadly enemy; mortal combat; a mortal illness
Similar words: fatal
Definition: bringing death
Definition: of an instrument of certain death
Usage: deadly poisons; lethal weapon; a lethal injection
Similar words: fatal
Definition: bringing death
Synonyms: pernicious, pestilent, deadly, baneful
Definition: exceedingly harmful
Similar words: noxious
Definition: injurious to physical or mental health
Usage: noxious chemical wastes; noxious ideas
Definition: involving loss of divine grace or spiritual death
Usage: the seven deadly sins
Synonyms: deadly, venomous, virulent
Definition: extremely poisonous or injurious; producing venom
Usage: venomous snakes; a virulent insect bite
Similar words: toxic
Definition: of or relating to or caused by a toxin or poison
Usage: suffering from exposure to toxic substances