KEY: Terrible.
SYN: Awful, fearful, dreadful, formidable, terrific, frightful,tremendous, horrible, shocking.
ANT: In_formidable, unastounding, unstartling, unastonishing.

• Sentinel
• Separable
• Separate \a
• Separate, {[u]?}
• Separation
• Sepulchral
• Sepulture
• Sequacious
• Sequel
• Sequence
• Sequestered
• Seraphic
• Serene
• Serf
• Series
• Serious
• Serpentine
• Servant
• Serve
• Service
• Serviceable
• Servile
• Servility
• Servitude
• Set, {[o]?}