proficient

Describes a level of skill that is well beyond basic competence but stops short of absolute mastery or innate genius. It suggests a reliable, polished capability gained through practice and study. It carries a professional and objective tone. While "skilled" is general and "expert" implies the highest possible tier, "proficient" often appears in formal evaluations, resumes, and academic certifications to indicate that someone can perform tasks independently and accurately. There is a strong connotation of efficiency and correctness. A proficient person doesn't just know how to do something; they do it smoothly and without significant errors.