Parts of Speech - Nouns - Irregular Plurals

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Across
  1. 3. ovum
  2. 4. vertex
  3. 6. person
  4. 7. mango
  5. 8. staff
  6. 10. wharf
  7. 11. runner-up
  8. 12. Toronto Maple Leaf
  9. 15. zero
  10. 17. offspring
  11. 18. man-of-war
  12. 19. nucleus
  13. 20. millennium
  14. 21. stratum
  15. 22. stimulus
  16. 24. salmon
  17. 26. pants
Down
  1. 1. radius
  2. 2. sheaf
  3. 3. ox
  4. 4. vertebra
  5. 5. passerby
  6. 9. quiz
  7. 13. mother-in-law
  8. 14. phenomenon
  9. 16. opus
  10. 20. matrix
  11. 22. sheep
  12. 23. medium
  13. 25. oasis