expert
UK: ˈɛkspɜːt | US: ˈɛkspɜːrt
n. a person with specialized knowledge or skill in a particular field
adj. having or involving such knowledge or skill
expert = ex<out> + pert<skilled>
- ex (Latin: "out of, from") → Implies thoroughness or mastery.
- pert (Latin: peritus, "skilled, experienced") → Denotes practical knowledge.
Etymology Origin:
Derived from Latin expertus (past participle of experiri, "to try, test"), the word originally meant "tested by experience." Over time, it narrowed to describe someone proven skilled through practice. The morpheme ex- emphasizes outward demonstration of ability, while -pert retains its core link to skill.
She is an expert in marine biology.
The committee sought expert advice before finalizing the policy.
His expert handling of the crisis averted disaster.
The book provides expert tips for beginners.
Only an expert could detect the subtle flaw in the design.