proficiency

noun

pro·​fi·​cien·​cy prə-ˈfi-shən(t)-sē 

1

: advancement in knowledge or skill : progress

2

: the quality or state of being proficient

Synonyms of proficiency

• mastery
• experience
• IQ
• mastership
• command

Examples of proficiency in a Sentence

surprised by his proficiency at the game after only the briefest explanation of the rules

acquired proficiency at golf through long hours of practice

Recent Examples on the Web

In the scene, Simon’s family speaks Kreyòl — although to varying degrees of proficiency — and the camera lingers on the Haitian feast presented on the table. — Leah Asmelash, CNN Money, 4 Oct. 2026

Improving reading and math proficiency for public school students to ensure all have an opportunity to succeed. — Mary Ramsey, Charlotte Observer, 2 Oct. 2026

He will long be remembered and revered for his durability and loyalty to the Falcons and his proficiency at his craft. — Daniel Flick, AJC.com, 2 Oct. 2026

From 2022 to 2026, proficiency increased by more than 6 percentage points in both subjects. — Joshua L. Michael, Baltimore Sun, 1 Oct. 2026

Word History

First Known Use

1597, in the meaning defined at sense 2

Rhymes for proficiency

• deficiency
• efficiency
• sufficiency
• immunodeficiency
• inefficiency
• insufficiency

Kids Definition

proficiency

noun

pro·​fi·​cien·​cy prə-ˈfish-ən-sē 

plural proficiencies

: the quality or state of being proficient