1. imprecate wish harm upon; invoke evil
  2. empirical derived from experiment and observation rather than theory
  3. imperative requiring attention or action
  4. embrocate administer an oil or ointment to
  5. imbricate used especially of leaves or bracts
  6. aggregate a sum total of many heterogeneous things taken together
  7. Empire day British, anniversary of Queen Victoria's birth
  8. embargo a government order imposing a trade barrier
  9. imbroglio an intricate and confusing interpersonal situation
  10. impressed deeply or markedly affected or influenced
  11. empowered invested with legal power or official authority
  12. empirically in an empirical manner
  13. umbrage a feeling of anger caused by being offended
  14. improved become or made better in quality
  15. amperage the strength of an electrical current measured in amperes
  16. imprecation the act of calling down a curse that invokes evil
  17. imperfect defective or inadequate
  18. embarrassed feeling or caused to feel uneasy and self-conscious
  19. important significant in effect or meaning
  20. impresario a sponsor who books and stages public entertainments