expert

Từ điển American Heritage Dictionary 4th

ex·pert (ĕkʹspûrt')n.
1. A person with a high degree of skill in or knowledge of a certain subject.
2.
a. The highest grade that can be achieved in marksmanship.
b. A person who has achieved this grade.adj. (ĕkʹspûrt, ĭk-spûrtʹ)
Having, involving, or demonstrating great skill, dexterity, or knowledge as the result of experience or training. See Synonyms at proficient. [Middle English, from Old French, experienced, from Latin expertus, past participle of experīrī, to try. See per-³ in Indo-European Roots.] exʹpert'ly adv.exʹpert'ness n.

• Từ đồng nghĩa / Synonyms:
  technical, adept, good, practiced, proficient, skillful, skilful