List 11: vowel changes I

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Across
  1. 3. showing that something exists or is true
  2. 6. constancy; steadiness; permanence
  3. 10. exchange; interchange; rotate; take turns
  4. 11. medicine; preparation; therapy; tonic
  5. 12. planned; tactical; calculated
  6. 14. meaning; explanation; clarity; sharpness
  7. 15. lack; deficiency; scarcity
  8. 16. deny; take away; leave without
  9. 17. steady; firm; unwavering; strong
  10. 18. plants; flora; undergrowth; shrubbery
Down
  1. 1. point out; specify; signify
  2. 2. corrective; counteractive; curative
  3. 3. resistant; safe from disease
  4. 4. vaccinate; protect against disease
  5. 5. limited; restricted; fixed
  6. 7. endless; unlimited; immeasurable
  7. 8. option; substitute; other; another
  8. 9. plant with edible parts
  9. 13. describe; classify; identify; delineate
  10. 17. plan; approach; tactic; line of attack