synonyms

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Across
  1. 3. assist, aid
  2. 4. crucial, essential
  3. 8. simple, effortless
  4. 9. hard, challenging
Down
  1. 1. start, commence
  2. 2. fast, rapid
  3. 3. joyful, content
  4. 5. mad, furious
  5. 6. intelligent, clever
  6. 7. finish, conclude