expert

From Wiktionary
expert is on the Basic English 850 List.
experience - expert - eye
expert is on the Academic Word List.

Pronunciation[change]

Noun[change]

Singular
expert

Plural
experts

Expert is on the Academic Vocabulary List.
  1. (countable) An expert is a person who knows more, or can do something better, than most people, usually because of special study or practice.
    Zidane is an expert at penalty kicks.
    The company has hired an expert in computer systems.
    Today we heard an expert witness explain the details of the DNA analysis.

Adjective[change]

Positive
expert

Comparative
more expert

Superlative
most expert

  1. An expert skier, teacher, player, etc. is very skillful or experienced.
    She's an expert skier, one of the fastest and most beautiful on the hill.
    My dog has become quite expert at opening doors.