Mono-

1234567891011
Across
  1. 2. (n) control of a product or service by one company
  2. 5. (n) an abnormal fear of being the only one there; fear of being alone
  3. 6. (adj) speaking or writing only one language
  4. 9. (n) a speech in which every word has one tone of voice
  5. 10. (n) a long speech given by one person
  6. 11. (n) an eyeglass for one eye
Down
  1. 1. (n) the belief in one god
  2. 3. (adj) having one color; a painting, design, photo, or outfit that is only one color or shades of one color
  3. 4. (adj) having only one syllable
  4. 7. (n) something made out of one single large block or piece of stone; one single stone monument
  5. 8. (n) a track for subway or train cars that one has one rail
  6. 9. (n) a person who speaks only one language