IPA: /prəˈfɛʃənl/
KK: /prəˈfɛʃənl/
Relating to a job or career that requires special training or education, often showing high skill or expertise.
She is a professional musician who performs at concerts around the world.
A person who is trained and skilled in a specific job or profession, often earning a living from it.
She hired a professional to help with her taxes.
Professional → It is formed from "professio" (from Latin, meaning a public declaration or profession) and the suffix "-al" (meaning relating to). The word "professional" refers to something that relates to a profession or occupation, often implying a level of expertise or qualification.
Think of a 'public declaration' ('professio') about a job or skill — that's why 'professional' means relating to a specific profession.