impediment

n. 妨碍、阻碍物

impassable, impasse, impassioned, impassive, impassively, impassiveness, impassivity, impassivity, impatience, impatient, impatiently, impeach, impeachable, impeachment, impeccable, impeccably, impecunious, impecuniously, impecuniousness, impedance, impede, impedimenta, impel, impend, impending, impenetrability, impenetrable, impenetrably, impenitence, impenitent, impenitently, imperative, imperatively, imperceptible, imperceptibly, imperfect, imperfection, imperfectly, imperial, imperialism, imperialist,