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    crucial

    US /ˈkruʃəl/

    ・

    UK /'kru:ʃl/

    • Adjective
    • Extremely important or necessary
    • Of great importance to the success of something.
    B1
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    incredibly

    US /ɪnˈkrɛdəblɪ/

    ・

    UK /ɪnˈkredəbli/

    • Adverb
    • To a great degree; very; amazingly
    • Extremely; so much so it is hard to believe
    A2
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    potentially

    US /pəˈtɛnʃəlɪ/

    ・

    UK /pə'tenʃəlɪ/

    • Adverb
    • That could happen or become reality
    B1
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    extreme

    US /ɪkˈstrim/

    ・

    UK /ɪk'stri:m/

    • Adjective
    • Very great in degree
    • Farthest from a center
    • Noun
    • Effort that is thought more than is necessary
    • The furthest point or limit of something.
    B1
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