1. Causing fear or anxiety by threatening great harm
   "a life-threatening disease"
   - dangerous, grave, grievous, serious, severe

See also: critical

• autogamous
• autogamy
• autogenesis
• autogenetic
• autogenic
• autogenic therapy
• autogenic training
• autogenics
• autogenous
• autogeny
• autogiro
• autograft
• autograph
• autograph album
• autographed
• autographic
• autography
• autogyro
• autoharp
• autoicous
• autoimmune
• autoimmune diabetes
• autoimmune disease
• autoimmune disorder
• autoimmunity