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Synonyms of proficiency in English:
proficiency
See US English definition of proficiency
See UK English definition of proficiency
See Spanish definition of competencia
noun
1‘her proficiency was obvious to everyone who sailed with her’
SYNONYMS
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
informal know-how
ANTONYMS
incompetence
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