hellacious /he-lāˈshəs/ (N American informal)

1. Very bad
2. Terrible
3. Enormous
4. Remarkable
5. Excellent (slang)

• coterie
• coteries
• coterminal
• coterminant
• coterminate
• coterminous
• coterminously
• cotes
• cot-folk
• coth
• cot-house
• cot-houses
• cothurn
• cothurni
• cothurns
• cothurnus
• coticular
• cotidal
• cotillion
• cotillions
• cotillon
• cotillons
• coting
• cotinga
• cotingas