| veteran(noun, person, knowledge, ability, knowledgeable) |
| pro(noun, master, expert, adult, professional) |
| old-timer(noun, person, knowledge, ability, informal) |
| expert(noun, adjective, person, authority, familiar) |
| master(noun, person, authority, female, expert) |
| vet(noun, person, knowledge, ability, informal) |
| professional(noun, adjective, person, practice, authority) |
| adept(noun, good, authority, familiar, intelligent) |
| maven(noun, authority, expert, genius, whiz) |
| virtuoso(noun, person, authority, master, expert) |
| warhorse(noun, person, expert, pro, trouper) |
| old stager(noun, expression, idiom, person) |
| maestro(noun, authority, expert, genius, doctor) |
| past master(noun, expression, authority, expert, genius) |
| ace(noun, authority, master, expert, genius) |
| authority(noun, expert, genius, whiz, doctor) |
| dab hand |
| genius(noun, sharp, authority, expert, doctor) |
| old pro(noun, expression, authority, master, expert) |
| oldtimer |