1. Hellish
   "Hence loathed Melancholy.../In Stygian cave forlorn" 
2. Dark and dismal as of the rivers Acheron and Styx in Hades
   "upon those roseate lips a Stygian hue"
   - Acheronian, Acherontic

See also: dark, infernal

• through empirical observation
• through with
• throughout
• throughput
• throughway
• throw
• throw a fit
• throw a spanner in the works
• throw a wobbly
• throw cold water on
• throw in the towel
• throw off
• throw out
• throw out of kilter
• throw overboard
• throw pillow
• throw rug
• throw stick
• throw together
• throw up
• throw-in
• throw-weight
• throwaway
• throwback
• thrower