1. perseverance the act of persisting
  2. bubble over overflow with a certain feeling
  3. perverse deviating from what is considered moral or right or proper
  4. pulverise make into a powder by breaking up or cause to become dust
  5. double reverse (American football) a running play in which a first reverse is followed by a second reverse
  6. blank verse unrhymed poetry, usually in iambic pentameter
  7. pulverize make into a powder by breaking up or cause to become dust
  8. Ebola virus a filovirus that causes Ebola hemorrhagic fever
  9. obverse the more conspicuous of two alternatives or cases or sides
  10. double first a first-class honours degree in two subjects
  11. vice versa with the order reversed
  12. plough horse a horse used to pull a plow
  13. palo verde densely branched spiny tree of southwestern United States having showy yellow flowers and blue-green bark; sometimes placed in genus Cercidium
  14. diverse distinctly dissimilar or unlike
  15. bibliophile someone who loves and usually collects books
  16. free verse poetry that does not rhyme or have a regular meter
  17. cleavers annual having the stem beset with curved prickles
  18. boulevard a wide street or thoroughfare
  19. Primula veris early spring flower common in British isles having fragrant yellow or sometimes purple flowers
  20. poliovirus the virus causing poliomyelitis