The answers to the clues are words with internal rhyme, such as "teepee".
-1. What highwaymen do - w*****
-2. Meal often shared with ants
-3. Grateful passenger who is travelling on a free ticket to go see his favorite band play
-4. Discharge from employment
-5. A killing
-6. Tolkien's darkest place
-7. A high-end PC carried on board an American supersonic military aircraft by a West Indian witchcraft practitioner
-8. Revered mentor or spiritual leader
-9. Mix socially
-10. Act obsequiously
-11. Flightless bird in New Zealand who eats green fruit
-12. Conference
-13. Luggage item for the hiking set
-14. To a more advanced point in time
-15. Vintage comic strip character on a bouncy toy
-16. Tramp
-17. Eighty
-18. Silver salmon
-19. Exceptionally able person - h******
-20. An organization's identity badge
-21. Put aside for future delivery
-22. A member of the Bantu-speaking people of Natal who keeps sheep and watches French crime films