| dynamite(familiar, knowledgeable, skilled, qualified, informed) |
| efficient(adjective, expert, capable, talented) |
| elderly(tired, gray, mature, aged, older) |
| encylopedic(adjective, knowing) |
| enfeebled(tired, gray, mature, aged, older) |
| enriched(ready, familiar, knowledgeable, informed, prepared) |
| esoteric(knowledgeable, cultured, educated, erudite, enlightened) |
| exercised(expert, skilled, capable, experienced, talented) |
| exhausted(tired, gray, mature, aged, older) |
| familiar with(verb, expression, adjective, phrasal verb, knowledge) |
| fossil(tired, gray, mature, aged, older) |
| from way back(expression, idiom, skilled, experienced, seasoned) |
| geriatric(tired, gray, mature, aged, older) |
| getting on(expression, tired, gray, mature, aged) |
| grave(knowledgeable, cultured, educated, erudite, enlightened) |
| gray(tired, mature, aged, older, elderly) |
| gray-haired(tired, gray, mature, aged, older) |
| great |
| grizzled(tired, gray, mature, aged, older) |
| grounded(adjective, sensible, familiar, knowledgeable, aware) |