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obstruct

obstruct - verb

  1. To interfere with the progress of: bog(down), encumber, hinder, hold back, impede. See help. open.
  2. To stop or prevent passage of: bar, block, dam, impede. See open.
  3. To cut off from sight: block(out), conceal, hide, obscure, screen, shroud, shut off or out. See show.