expertise

ek-sper-TEEZ /ˌekspɜːˈtiːz/
nounB2TOEFLIELTSGMATACT
professionalacademiceveryday

Expert skill or knowledge in a particular field.

Expertise refers to a deep, structured, and authoritative body of knowledge and skill acquired through years of study and practice. It is highly specific to a particular domain (e.g., 'tax law expertise').

The story behind the word. Expertise was borrowed from French in the 19th century. It shares its Latin root, experiri ('to try' or 'to test'), with the words 'experience' and 'experiment'. An expert, therefore, is literally someone who has 'tried and tested' a subject so many times that they have uncovered its deepest truths.

Word relationships

  • know-how: Know-how is an informal term for practical, hands-on skill and experience, whereas expertise is more formal and includes both deep theoretical knowledge and practical skill.
  • mastery: Mastery implies complete control and supreme skill over a subject or physical medium, while expertise emphasizes authoritative knowledge and specialized competence.
  • ignorance: Ignorance is a complete lack of knowledge or information about a subject.
  • amateurism: Amateurism is the practice of an activity on an unpaid, non-professional, and often less skilled basis.

Commonly confused with

  • expertness: Expertness is the state of being expert (the quality), whereas expertise refers to the actual body of specialized knowledge and skill itself.

Word family

  • expert (noun/adjective): A person who is very knowledgeable about or skillful in a particular area.

Collocations

  • technical expertise
  • domain expertise
  • share expertise
  • acquire expertise

Idioms & expressions

  • know inside out
  • master of one's craft

Example sentences

  • "He brings over twenty years of financial expertise to our restructuring committee." A corporate announcement introducing a new consultant.
  • "The authority of the professional rests on their specialized expertise, which the layman cannot easily evaluate." A classic sociological text discussing professional authority.

Memory hook

Expertise is what you get when you combine an 'EXPERT' with 'EASE'. An expert does highly complex things with absolute ease. Expertise = Expert ease.

When not to use

Do not use 'expertise' to describe general intelligence or broad life skills. It should be tied to a specific discipline, craft, or field of study.

Fun facts

  • According to the popular '10,000-hour rule' popularized by Malcolm Gladwell, it takes approximately 10,000 hours of deliberate practice to achieve true expertise in any complex field.

Related words

proficient, adept

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