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    crucial

    US /ˈkruʃəl/

    UK /'kru:ʃl/

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

    US /stɪk/

    UK /stɪk/

    • Verb (Transitive/Intransitive)
    • To push a sharp or pointed object into something
    • To join together using glue or paste
    • Countable Noun
    • Long thin piece of wood from a tree
    tricky

    US /ˈtrɪki/

    UK /'trɪkɪ/

    • Adjective
    • Difficult, so needing skill to do or deal with
    • Likely to use tricks; dishonest or deceptive
    effective

    US /ɪˈfɛktɪv/

    UK /ɪˈfektɪv/

    • Adjective
    • Working efficiently to produce a desired result
    • In operation; in force.
    A1TOEIC
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