Synonyms for Life-threatening:

• adj.

  •Other relevant words: (adjective)
  • hazardous,
  • deadly,
  • touch and go,
  • threatening,
  • unsafe,
  • capital,
  • lethal,
  • critical.

• n.

  •Other relevant words: (noun)
  • dangerous,
  • serious,
  • grievous,
  • severe,
  • grave.

• Other synonyms:

  •
  • catching,
  • benign,
  • congenital,
  • clinical,
  • communicable,
  • asymptomatic,
  • chronic,
  • autoimmune.
  •Other relevant words:
  • Common Variable Immunodeficiency,
  • knacker's yard,
  • Chagas Disease,
  • lurgy,
  • CGD,
  • non-fatal,
  • dreaded lurgy,
  • justifiable homicide,
  • right to die.
  •Other relevant words (noun):
  • perilous,
  • detrimental,
  • septic,
  • tenuous,
  • stark,
  • injurious,
  • monstrous,
  • baleful,
  • flagitious,
  • virulent,
  • unwholesome,
  • touch-and-go,
  • sedate,
  • beyond help,
  • destructive,
  • risky,
  • pernicious,
  • stern,
  • unhealthy,
  • knockout,
  • malignant,
  • atrocious,
  • poisonous,
  • wicked,
  • good,
  • toxic,
  • heartbreaking,
  • awful,
  • weighty,
  • beyond hope,
  • hopeless,
  • terminal,
  • heartrending,
  • fatal,
  • desperate,
  • precarious,
  • sober,
  • deleterious,
  • heavy,
  • venomous,
  • noxious,
  • hard,
  • mortal,
  • advanced,
  • terrible,
  • harmful,
  • dreadful,
  • austere,
  • dire,
  • solemn,
  • acute,
  • spartan,
  • unplayful.

Paraphrases for Life-threatening:

• Forward Entailment

  • Adjective
    threatening.

• Independent

  • Adjective
    serious, hazardous, fateful, grave, danger, harmful, disastrous, wicked, perilous, unsafe, dire, critical, menacing, hazard, risky.

• Other Related

  • Adjective
    fatal, deadly, lethal, mortal, dangerous, severe, debilitating.

Antonyms for Life-threatening:

• adj.

  • very dangerous
    invigorating, harmless.

• Other antonyms:

  • Other antonyms:
    noncrucial, noncritical.