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obsidian
obsidianal obsolescence obsolescent obsolescently obsolescentness obsolete obsoleteness obsoletism obstacle obstacle-race obstetric obstetrical obstetrician obstetrics obstinacy obstinate obstinately obstinateness obstipant obstipation obstreperous obstreperously obstreperousness obstruct obstructer obstruction obstructionism obstructionist obstructive |
obsidian /ɔb'sidiən/
danh từ
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