1. wave number the reciprocal of the wavelength of a wave
  2. whole number any of the natural numbers or zero
  3. phone number the number is used in calling a particular telephone
  4. outnumber be larger in number
  5. avenger someone who takes action in return for an injury or offense
  6. f number the ratio of the focal length to the diameter of a (camera) lens system
  7. page number the system of numbering pages
  8. mass number the sum of the number of neutrons and protons in an atomic nucleus
  9. call number a mark consisting of characters written on a book
  10. wisenheimer someone who makes overly clever, smug, or sarcastic comments
  11. anymore at the present or from now on; usually used with a negative
  12. Mach number the ratio of the speed of a moving body to the speed of sound
  13. offender a person who transgresses moral or civil law
  14. back-number someone who is no longer popular
  15. evermore for a limitless time
  16. enamor attract
  17. enamour attract; cause to be enamored
  18. encumber hold back, impede, or weigh down
  19. ephemeral anything short-lived, as an insect that lives only for a day
  20. weisenheimer an upstart who makes conceited, sardonic, insolent comments