| imperceptible(adjective, hard, slight, fine, thin) |
| intricate(adjective, hard, obscure, complex, tricky) |
| penetrating(adjective, quiet, sound, slight, sharp) |
| recondite(adjective, sharp, obscure, exact, deep) |
| resourceful(adjective, fast, original, shrewd, inventive) |
| rigorous(adjective, feature, slight, difference) |
| scrupulous(adjective, feature, slight, difference) |
| suggestive(adjective, quiet, slight, fine, thin) |
| understated(adjective, quiet, slight, fine, thin) |
| witty(adjective, cunning, witty) |
| arcane(adjective, ironic, deadpan, understated, laconic) |
| attenuated(adjective, dull, quiet, light, slight) |
| baneful |
| complicated(hard, obscure, complex, tricky, puzzling) |
| concealed(adjective, quiet, plain, imperceptible, discreet) |
| critical(sharp, exact, fast, sensitive, precise) |
| dry(adjective, pleasant, bright, warm, fair) |
| filmy(quality, gentle, mild, ghostly, unearthly) |
| gossamer(adjective, wispy) |
| hairline(adjective, quiet, slight, gentle, sharp) |