engulf or ingulf /in-gulfˈ/, also (obsolete) engulph or ingulph

1. To swallow up completely
2. To cause to be swallowed up
3. To overwhelm

engulfˈment noun

• cot-house
• cot-houses
• cothurn
• cothurni
• cothurns
• cothurnus
• coticular
• cotidal
• cotillion
• cotillions
• cotillon
• cotillons
• coting
• cotinga
• cotingas
• Cotingidae
• cotinine
• cotinines
• cotise
• cotised
• cotises
• cotising
• cotland
• cotlands
• cotoneaster