| indefinite(adjective, certain, vague, ambiguous) |
| uncertain(adjective, clear, doubtful, sure, changeable) |
| vague(adjective, clear, plain, definite) |
| undefined(adjective, clear, obscure, doubtful, vague) |
| ambiguous(adjective, clear, obscure, plain, doubtful) |
| amorphous(adjective, character, shape, distinct) |
| dark |
| imprecise(adjective, obscure, doubtful) |
| indeterminate(adjective, obscure, uncertain, doubtful, vague) |
| unclear(adjective, clear, obscure, doubtful) |
| indistinct(adjective, obscure, plain, doubtful, ambiguous) |
| inexact(adjective, obscure, doubtful) |
| doubtful(adjective, obscure, unclear, questionable) |
| dubious(adjective, clear, honest, doubtful, vague) |
| equivocal(adjective, clear, obscure, uncertain, doubtful) |
| ever-changing |
| obscure(adjective, doubtful) |
| unfixed(adjective, obscure, doubtful) |
| unlimited(adjective, obscure, limited, doubtful, little) |
| unrelatable |