n. 1. material such as coal, gas, or oil that is burned to produce heat or power. 2. food, drink, or drugs as a source of energy. 3. a thing that sustains or inflames passion, argument, or other emotion or activity. v. 4. supply or power with fuel. 5. cause to burn more intensely. power source. heat source. 6. combustible. 7. nourishment. 8. nutriment. 9. nutrition. 10. bread. 11. encouragement. 12. incentive. 13. ammunition. 14. incitement. 15. stimulus. 16. provocation. 17. power. 18. charge. 19. fire. 20. stoke up. 21. supply with fuel. 22. stimulate. 23. boost. 24. encourage. 25. intensify. 26. fortify. 27. support. 28. nurture. 29. poetry. 30. litfuse.