What does consultant mean?
A consultant is a person who offers expert advice in a specialized field, typically engaged by businesses, governments, or other organizations to solve specific problems or improve performance. Consultants work across nearly every industry — management, finance, technology, law, education, healthcare — and may be self-employed, part of a large firm, or employed internally. The word derives from the Latin consultare, meaning to deliberate or take counsel, reflecting the advisory nature of the role. In British English, the term has an additional, well-established meaning: a consultant is the most senior rank of hospital doctor, someone who has completed full specialist training and bears ultimate responsibility for patient care in their specialty. This medical usage does not generally apply in American English, where such specialists are simply called attending physicians. The word connotes expertise, independence, and authority, though it occasionally attracts skepticism about the value of high-priced external advice.
A person who provides expert professional advice in a particular field, especially one engaged by businesses or organizations on a temporary basis.
"We brought in a technology consultant to assess our cybersecurity risks."
Often modified by field: management consultant, financial consultant, IT consultant.
(British English) A senior hospital doctor who has completed specialist training and holds ultimate clinical responsibility within their specialty.
"The consultant will review your test results during tomorrow's ward round."
This sense is specific to UK and Irish healthcare systems; American English uses 'attending physician' instead.
Regular plural; used identically across both senses.
"The firm employs over two hundred consultants across its European offices."
In the UK, calling your doctor a 'consultant' is technically correct — but only if they've reached the very top of the hospital hierarchy.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of consultant
Consultant comes from the Latin consultare, meaning 'to deliberate, discuss, or take counsel,' itself a frequentative form of consulere ('to consider, advise'). The word entered English via French in the early 17th century, initially referring to a person consulted for advice or opinion. It shares its Latin root with related terms including consult, consultation, consul (the Roman magistrate title), and consulate, all stemming from the same deliberative sense of seeking counsel.
Related word forms
How consultant is actually used
In British English, 'consultant' carries a precise institutional meaning as the most senior grade of hospital doctor — using it loosely for junior doctors can cause confusion. In business contexts, the word is neutral in register, though 'consultancy culture' sometimes attracts mild criticism implying expensive external advice of questionable value.
Easily confused with consultant
A consul is a government official stationed abroad to protect their country's citizens' interests, whereas a consultant is an adviser offering professional expertise.
A counselor typically gives guidance on personal or legal matters, often over an ongoing relationship, while a consultant is engaged to provide specialized professional advice on specific problems.