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expert witness

expert witness

23 4.6
A person with special knowledge who gives an opinion in court about a subject they know well
  • noun
  • /ˈɛkspɜrt ˈwɪtnəs/
  • Specialized
translation icon : perito
  • After lunch, a professor of neurosurgery testified as an expert witness for the other side.
  • expert witness testimony
  • expert witnesses testified
  • expert witness deposition

And according to expert witnesses, this is not enough to be considered fatal.

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Examples

  • Let the record show that Mr. Katz is here today as an expert witness.

  • The court called Dr. Smith to testify as an expert witness on forensic science.

  • The man is an expert witness.

  • Also, expert witnesses are needed in the area of mental health.

  • Well, uh, Richard is gonna be one of our eight expert witnesses.

  • And according to expert witnesses, this is not enough to be considered fatal.

  • If it pans out, would you be willing to appear as an expert witness?

    Fiction book (1991)
  • His consulting practice has included expert witness testimony in intellectual property and general engineering cases.

    Academic text (1998)
  • Dr. Leon Gables, you've testified in over fifty cases, haven't you, as an expert witness?

  • I've been an expert witness in cases involving tort cases, intentional infliction of emotional distress.

Synonyms

opinionist
vsexpert witness
  • Formal
8.9

A professional who gives expert reports for legal or medical cases

gives opinion testimony specifically in court based on professional qualification

Antonyms

14 4.9

A person who does not have special knowledge or training in a subject

lay witness
  • Jargon
1 6.9

A person who gives evidence in court about what they personally saw or experienced

How Qualified

legal expert
21 4.0
expert witness
  • Specialized
23 4.6
lay witness
  • Jargon
1 6.9

Surface Forms

Morphology

expert + witness

The meaning is directly and compositionally derived from 'expert' (a person with deep knowledge) + 'witness' (a person who testifies), i.e. a witness who is an expert. This noun–noun combination follows a common and cross-linguistically similar pattern, so a B1 learner who knows both words can readily infer the MWE's meaning (though full legal nuances require context).

Etymology

Expert witness comes from the words expert (a person with special skill) and witness (someone who tells what they know in court). Imagine a doctor or engineer called into a trial who did not see the event but uses their skill to 'see' the facts and explain them, so an expert witness gives a special 'opinion' to help the court.