| weak(adjective, dull, soft, gentle, dark) |
| broad(adjective, soft, careless, indifferent, common) |
| feeble(adjective, dull, weak, soft, gentle) |
| intangible(adjective, slight, excellent, gentle, fine) |
| perplexing(adjective, clear, obscure, rough, difficult) |
| rough(adjective, unclear, incomplete, inexact, approximate) |
| ambivalent(adjective, open, uncertain, doubtful, hesitant) |
| debatable(adjective, uncertain) |
| hidden(adjective, obscure, heavy, strange, doubtful) |
| indiscernible(adjective, imperceptible) |
| muddy(adjective, clear, obscure, uncertain, definite) |
| shady(adjective, dull, obscure, dark, gloomy) |
| sketchy(adjective, rough, incomplete) |
| vacillating(adjective, uncertain, nervous, doubtful, unsettled) |
| concealed(adjective, obscure, difficult, uncertain, doubtful) |
| dreamy(adjective, excellent, gentle, obscure, careless) |
| generalized(adjective, clear, definite, unclear, indistinct) |
| incoherent(adjective, obscure, incomprehensible, unformed, illegible) |
| inconstant(adjective, doubtful, hesitant, changeable, unsure) |
| indefinable(adjective, subtle, elusive) |