| cognoscente(noun, person, authority, proficiency, expertise) |
| connaisseur(noun, person, proficiency, competence) |
| old hand(noun, expression, person, authority, expert) |
| scholar(noun, person, proficiency, competence) |
| champion(noun, authority, expert, genius, doctor) |
| star(noun, authority, expert, specialist) |
| superstar(noun, authority, expert, specialist) |
| consultant(noun, person, expert, proficiency, competence) |
| mastermind(noun, person, inspiration, proficiency) |
| boffin(noun, person, authority, expert, whiz) |
| dab hand(noun, expression, person, proficiency, competence) |
| doyenne(noun, person, authority, expert, genius) |
| enthusiast(noun, person, proficiency, competence) |
| guru(noun, person, proficiency, competence) |
| meister(noun, person, proficiency, competence) |
| old pro(noun, expression, person, authority, expert) |
| real pro(noun, expression, authority, expert, genius) |
| sage(noun, person, authority, expert, genius) |
| scientist(noun, authority, expert, genius, doctor) |
| technician(noun, person, expert, proficiency, competence) |