Obturate means to block or close up a passage or opening. The antonyms or opposite words of obturate include open, unblock, unclog, free, clear, and unstop. These words indicate the opposite of obturate, meaning to make something accessible or available. For example, opening a door, clearing a drain or unclogging a pipe, and unblocking a path, all need the opposite of obturate. Use of antonyms like open, unblock, free, clear, and unstop are crucial in removing any obstructions, ensuring free flow and efficient functioning. Therefore, knowing their antonyms will help convey the opposite meaning of obturate clearly.