Un and Tri

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Across
  1. 2. not feeling or showing gratitude
  2. 3. out of the ordinary; unusual
  3. 4. a three sided shape
  4. 5. a three pronged spear
  5. 7. a three part series in the movies or a book
  6. 8. not feeling confident
Down
  1. 1. three babies born at one time to the same mother
  2. 2. not likely to happen
  3. 3. causing discomfort
  4. 4. a three legged stool
  5. 6. a group of three people working together