1. a high degree of competence or skill; expertise

Examples

• She demonstrated remarkable proficiency in mathematics.
• The job requires proficiency in at least two programming languages.
• His proficiency with the violin impressed the entire audience.
• Students must show proficiency in reading before advancing to the next grade.
• The language proficiency test measures speaking, writing, and comprehension skills.
• After years of practice, she achieved proficiency in French cooking.
• The certification program tests technical proficiency in various software applications.