1. Extremely alarming
   - bloodcurdling, nightmarish

See also: alarming

• deflection
• deflective
• deflector
• deflexed
• deflexion
• defloration
• deflower
• Defoe
• defog
• defogger
• defoliant
• defoliate
• defoliated
• defoliation
• defoliator
• deforce
• deforest
• deforestation
• deform
• deformation
• deformational
• deformed
• deformity
• defragment
• defragmentation