Synonyms of the word

proficiency

• n. Ability, skill, competence.

competence

• n. (uncountable) The quality or state of being competent, i.e. able or suitable for a general role.
• n. (countable) The quality or state of being able or suitable for a particular task; the quality or state…
• n. (dated) A sustainable income.
• n. (countable) In law, the legal authority to deal with a matter.

competency

• n. (obsolete) A sufficient supply (of).
• n. (obsolete) A sustainable income.
• n. The ability to perform some task; competence.
• n. (law) Meeting specified qualifications to perform.
• n. (linguistics) Implicit knowledge of a language’s structure.

skillfulness

• n. The state or quality of being adept or skillful.

technique

• n. (uncountable) The practical aspects of a given art, occupation etc.; formal requirements.
• n. (uncountable) Practical ability in some given field or practice, often as opposed to creativity or imaginative…
• n. (countable) a method of achieving something or carrying something out, especially one requiring some skill…