| proficient(noun, adjective, good, authority, intelligent) |
| specialist(noun, person, authority, master, expert) |
| whiz(noun, authority, master, expert, genius) |
| wizard(noun, informal, master, expert, expression) |
| able(skilled, accomplished, talented) |
| accomplished(familiar, sophisticated, knowledgeable, skilled, competent) |
| accustomed(familiar, sophisticated, knowledgeable, skilled, competent) |
| adapted(skilled, accomplished, talented) |
| adequate(skilled, accomplished, talented) |
| adult |
| apt(skilled, accomplished, talented) |
| artist(noun, authority, master, expert, genius) |
| artiste(noun, authority, master, expert, genius) |
| au fait(expression, skilled, experienced, hardened, accomplished) |
| bag(noun, adult) |
| been around(expression, familiar, sophisticated, knowledgeable, competent) |
| been there(expression, familiar, sophisticated, knowledgeable, competent) |
| brain(authority, expert, specialist, artist) |
| broken in(expression, familiar, sophisticated, knowledgeable, competent) |
| buff(noun, authority, master, expert, genius) |