| cultured(knowledgeable, educated, erudite, enlightened, scholarly) |
| delicate(hard, sharp, exact, tricky, complicated) |
| eclipsed(obscure, dark, secret, unknown, hidden) |
| educated(knowledgeable, cultured, erudite, enlightened, scholarly) |
| elusive |
| entangled(adjective, hard, fancy, obscure, difficult) |
| erudite(obscure, deep, thoughtful, precise, knowledgeable) |
| formidable(hard, intense, heavy, fierce, tricky) |
| hard(adjective, fancy, obscure, difficult, heavy) |
| hypothetical(intellectual, abstract, insubstantial, theoretical, imperceptible) |
| ideal(intellectual, abstract, theoretical, philosophical, nonconcrete) |
| indefinite(adjective, uncertain, doubtful, vague, intellectual) |
| inexplicable(adjective, hard, strange, deep, tricky) |
| labyrinthine(adjective, hard, fancy, obscure, difficult) |
| latent(obscure, dark, secret, unknown, hidden) |
| learned(obscure, deep, thoughtful, precise, knowledgeable) |
| lettered(knowledgeable, cultured, educated, erudite, enlightened) |
| literate(knowledgeable, cultured, educated, erudite, enlightened) |
| muddy(adjective, obscure, difficult, uncertain, vague) |
| nice(hard, sharp, exact, tricky, complicated) |