Proficiency may refer to: Language proficiency, the ability of an individual to speak or perform in an acquired language Expertise Skill, the learned capacity to carry out predetermined results often with the minimum outlay of time, energy, or both Ability, the state of excelling in a specific situation or skill; being above standard Uncertainty coefficient, an information-theoretic measure of nominal association
See also
Efficiency (disambiguation) Progress (disambiguation) Profit (disambiguation) Test (disambiguation)