| general(adjective, rough, uncertain, vague, unknown) |
| vague(adjective, clear, rough, uncertain, definite) |
| undefined(adjective, uncertain, vague, unknown, unfixed) |
| indefinite(adjective, rough, strange, uncertain, vague) |
| non-specific(adjective, vague) |
| unidentified(adjective, strange, ordinary, vague, unknown) |
| indeterminate(adjective, rough, uncertain, vague, unknown) |
| undetermined(adjective, rough, strange, uncertain, faint) |
| nebulous(vague, unclear, indistinct, indistinguishable) |
| unclear(adjective, rough, vague, unknown, hazy) |
| imprecise(adjective, rough, uncertain, faint, vague) |
| inexact(adjective, rough, uncertain, vague, unknown) |
| obscure(adjective, rough, strange, vague, mysterious) |
| uncertain(adjective, rough, vague, unknown, unclear) |
| undesignated |
| anonymous(adjective, strange, choice, unknown, indefinite) |
| unnamed(adjective, strange, unknown, indefinite, undisclosed) |
| unspecific(adjective, unknown, unfixed, unlimited) |
| ambiguous(adjective, rough, vague, unknown, unclear) |
| amorphous(adjective, unclear, indistinct, indistinguishable) |