Mono=One

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