maelstrom /mālˈstrom/

1. A particularly powerful whirlpool
2. (with cap) a well-known whirlpool off the coast of Norway
3. A confused or disordered state of affairs
4. Any resistless overpowering influence for destruction

• thoroughest
• thoroughfare
• thoroughfares
• thoroughgoing
• thoroughgoingly
• thoroughgoingness
• thoroughly
• thoroughness
• thoroughnesses
• thorough-paced
• thoroughpin
• thoroughs
• thoroughwax
• thoroughwaxes
• thorow-wax
• thorp
• thorpe
• thorpes
• thorps
• those
• those were the days
• Thoth
• thother
• thou
• thou'd