proficient
adjectiveUK /prəˈfɪʃ.ənt/
US /prəˈfɪʃ.ənt/
Very good at doing something because you have practiced a lot.
She is proficient at playing the piano.
OTHER MEANINGS
2. Having or showing great knowledge or skill in a particular field.
He is proficient in three languages.
3. Well advanced in an art, occupation, or branch of knowledge.
The team hired a proficient engineer to lead the project.
4. Competent or skilled in doing or using something.
She became proficient with the new software within a week.