1. Extremely alarming
   - hair-raising, nightmarish

See also: alarming

• exasperatingly
• exasperation
• exaugural
• exbibit
• exbibyte
• Excalibur
• excavate
• excavation
• excavator
• exceed
• exceedance
• exceeding
• exceedingly
• excel
• excel at
• excellence
• excellency
• excellent
• excellently
• excelsior
• excentric
• except
• exception
• exception report
• exceptionable