Proficient, adept, skilled, skillful, expert mean having great knowledge and experience in a trade or profession. See examples of expert used in a sentence. An expert is someone who knows a ton about the subject at hand.
The adjective form of expert describes someone or something that has that special knowledge. If you get expert instruction, that. Pertaining to or characteristic of an expert:
Definition of expert noun in oxford advanced learner's dictionary. Jan 20, 2026expert (comparative more expert, superlative most expert) extraordinary capable or knowledgeable. Aug 10, 2025discover the comprehensive meaning of "expert" – its definition, etymology, and real-world examples.
Expert advice or help is given by someone who has studied a subject thoroughly or who is very skilled at a particular job. We'll need an expert opinion.
