Blue Group -less words

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Across
  1. 3. having no fear
  2. 4. extremely clean
  3. 6. a special event at which people dance to traditional music, especially in Scotland and Ireland
  4. 7. of no use; not working or not achieving what is needed
  5. 9. using a system of radio signals rather than wires to connect computers OR another word for a radio
  6. 10. without any clear intentions, purpose, or direction
Down
  1. 1. causing no physical pain
  2. 2. having no knowledge of something, or of things in general
  3. 5. unwilling or unable to stay still or to be quiet and calm, because you are worried or bored
  4. 8. the inside surface of a room that you can see when you look above you