Definition of proficiency in English:

proficiency

noun

  • A high degree of competence or skill; expertise.

    ‘he demonstrated his proficiency in Chinese’
    • ‘What it does test is verbal ability, not your proficiency in topics you learned in English class.’
    • ‘Penalty corner hits are an additional weapon to his accomplished all-round proficiency.’
    • ‘The gags almost seem muted by the technical proficiency of a practiced master of cinema.’
    • ‘A relationship between a child's age and proficiency in early math skills also exists.’
    • ‘Her gift is a pop proficiency that's rarer than musicianship in that she keeps people curious.’
    • ‘Of these, dexterity or technical proficiency is considered to be of paramount importance among surgical trainees.’
    • ‘Each time you gain a level, you simply receive some ‘skill points,’ and you can spend those points on things like ability scores, weapon proficiencies, and skills.’
    skill, skilfulness, expertise, experience, ability, capability, capacity, competence, competency, adeptness, adroitness, excellence, mastery, prowess, professionalism, aptitude, deftness, dexterity, finesse, facility, effectiveness, accomplishment, aptness, expertness, talent
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Pronunciation

proficiency

/prəˈfɪʃənsi//prəˈfiSHənsē/