1. Causing fear or dread or terror
   - awful, dire, direful, dread, dreaded, dreadful, fearful, frightening, horrendous, horrific, terrible

See also: alarming, fearsomely

• smoke-filled
• smoke-free
• smoked
• smoked eel
• smoked haddock
• smoked herring
• smoked mackerel
• smoked salmon
• smokehouse
• smokeless
• smokeless powder
• smoker
• smokescreen
• smokestack
• smokily
• smokiness
• smoking
• smoking car
• smoking carriage
• smoking compartment
• smoking gun
• smoking jacket
• smoking mixture
• smoking room
• smoko