Specialist
Definition 1 of 5
Pro Tip 1/2
Context Specific
Use 'specialist' when referring to a person with advanced knowledge or skills in a defined field. When our network crashed, we had to call a computer specialist.
Pro Tip 2/2
Not a Beginner
A 'specialist' implies much more experience and knowledge than a beginner or generalist in the same field. A tax specialist can help you with complex tax issues.