| unknown(adjective, obscure, strange, mysterious, indefinite) |
| unidentified(adjective, strange, choice, secret, unknown) |
| nameless(adjective, knowledge, strange, choice, unknown) |
| unnamed(adjective, knowledge, obscure, new, choice) |
| obscure(adjective, strange, unknown, indefinite, unidentified) |
| incognito(adjective, adverb, obscure, strange, new) |
| secret(adjective, strange, choice, unknown, indefinite) |
| innominate(adjective, choice, unknown, misnomer) |
| unsung(adjective, obscure, strange, new, remote) |
| unfamiliar(adjective, strange, indefinite, unidentified, nameless) |
| unrecognized(adjective, obscure, new, remote, unknown) |
| faceless(adjective, unidentified, nameless, impersonal) |
| humble(adjective, strange, indefinite, unidentified) |
| unacknowledged(adjective, choice, unknown, misnomer) |
| unspecified(adjective, strange, choice, unknown, indefinite) |
| isolated(adjective, secluded) |
| undistinguished(adjective, strange, modest, unknown, indefinite) |
| insignificant |
| strange(adjective, indefinite, unidentified) |
| unsigned(adjective, knowledge, choice, unknown) |