- The definition of proficient is being skilled or good at something.
An example of proficient is an Olympic athlete.
proficient definition by Webster's New World
Origin: Classical Latin proficiens, present participle of proficere, to advance ; from pro-, forward plush facere, to make: see pro- and amp; do
proficient definition by American Heritage Dictionary
Origin: Latin prōficiēns, prōficient-, present participle of prōficere, to make progress; see profit.
- pro·fiˈcient·ly adverb