Silent letters

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Across
  1. 3. A young sheep
  2. 4. Not correct or true; incorrect
  3. 5. A ruler or leader in Russia before the revolution of 1917
  4. 6. Not easily noticed or detected; faint or slight
  5. 9. The joint between the thigh and the lower leg in a human
  6. 10. To make fabric by looping yarn together with needles
  7. 13. A body tissue that contracts and moves the body
  8. 15. Having a great distance from the bottom to the top; tall
  9. 16. A rounded handle or projection on a surface
  10. 17. To formally accuse someone of a crime
  11. 18. A period during which a monarch rules over a country or kingdom
  12. 20. A reply to a question or request
Down
  1. 1. A person who installs and repairs pipes and plumbing systems
  2. 2. A part of a play or film in which the action takes place in a single location
  3. 4. To mark symbols or letters on a surface, typically paper, with a pen, pencil, or other instrument
  4. 5. A tool with teeth that is used to smooth or arrange hair
  5. 6. An object, gesture, or word that conveys a meaning or message
  6. 7. A small imaginary creature that lives underground and guards treasure
  7. 8. A cutting tool with two blades joined by a pivot
  8. 10. A man who is given a rank of honor by a king or queen for his achievements and bravery
  9. 11. A stone structure or chamber where a dead person is buried
  10. 12. The natural agent that stimulates sight and makes things visible
  11. 14. The joint between the hand and the arm
  12. 16. To have information in one's mind; to be aware of something
  13. 19. A circular arrangement of flowers, leaves, or other material, used as a decoration