| discerning(deep, thoughtful, reflective) |
| distant(isolated, reclusive, uncompanionable) |
| heavy(obscure, complex, deep, thoughtful, reflective) |
| hermetic(obscure, complex, deep, thoughtful, mysterious) |
| hidden(obscure, complex, deep, mysterious, isolated) |
| invisible(obscure, deep, mysterious) |
| learned(deep, thoughtful, reflective) |
| little-known |
| mystic |
| obscure(adjective, complex, deep, mysterious, isolated) |
| penetrating(deep, thoughtful, reflective) |
| private(isolated, reclusive, uncompanionable) |
| profound(adjective, obscure, complex, deep, thoughtful) |
| retired(isolated, reclusive, uncompanionable) |
| sagacious(deep, thoughtful, reflective) |
| secluded(isolated, reclusive, uncompanionable) |
| seldom seen(expression, isolated, reclusive, uncompanionable) |
| sequestered(isolated, reclusive, uncompanionable) |
| solitary(isolated, reclusive, uncompanionable) |
| unhonored(isolated, reclusive, uncompanionable) |