Synonyms for life-threatening

Most common

serious · dangerous · severe · grievous

All synonyms

Adjective

Definitions

1. adj. 1

   Potentially fatal.

   The life-threatening illness caused him to be rushed to the hospital, where doctors worked around the clock to save his life.

Example sentences

• serious Loss of health is more serious than loss of money.
• dangerous You shouldn't have gone to such a dangerous place.
• severe Japan is confronted with severe economic problems.

By length

5 letters

grave¹

6 letters

severe²

7 letters

serious³

8 letters

grievous²

9 letters

dangerous³

The small number after each word is its number of syllables (severe² = 2 syllables).