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

• naval academy
• Naval Air Warfare Center Weapons Division
• naval architect
• naval attaché
• naval battle
• naval blockade
• naval brass
• Triticum spelta
• Triticum turgidum
• tritium
• tritoma
• triton
• tritone
• triturate
• Triturus
• Triturus vulgaris
• triumph
• triumphal
• triumphal arch
• triumphalism
• triumphalist
• triumphant
• triumphantly
• triumvir
• triumvirate