Synonyms of proficiency in English:

proficiency


See definition of proficiency

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