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

The state law defines such programs as those that develop proficiency in both English and another language by offering instruction in a classroom that is typically a mix of native speakers of English and of the other language. — Arkansas Online, 16 Sep. 2026

Generally speaking, schools with larger shares of poor students have lower proficiency rates. — Rebecca Noel, Charlotte Observer, 9 Sep. 2026

Translate the future operating model into specific capabilities and realistic proficiency levels. — Kevin Chan, Forbes.com, 9 Sep. 2026

The percentage of Clarksville Elementary students who passed Indiana's reading proficiency exam jumped 14 points in one year. — Stephanie Stremplewski, Louisville Courier Journal, 9 Sep. 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