shibboleth /shibˈə-leth/

1. The criterion, catchword or catchphrase of a group, party or sect by which members may be identified
2. A slogan
3. A peculiarity of speech
4. The Gileadite test-word to distinguish an Ephraimite, who could not pronounce sh (from Bible, Judges 12.5–6)
5. Any such test

• exhaustions
• exhaustive
• exhaustively
• exhaustiveness
• exhaustivenesses
• exhaustless
• exhaust pipe
• exhaust pipes
• exhausts
• exhaust steam
• exhaust valve
• exhaust valves
• exhedra
• exhedrae
• exheredate
• exheredated
• exheredates
• exheredating
• exheredation
• exheredations
• exhibit
• exhibited
• exhibiter
• exhibiters
• exhibiting