| undistinguished(adjective, strange, new, remote, unknown) |
| undo(verb, remove, continue) |
| unexplained(adjective, strange, new, remote, mysterious) |
| unexplored(adjective, strange, new, remote, mysterious) |
| unfamiliar(adjective, strange, new, remote, mysterious) |
| unheard-of(adjective, strange, new, remote, unknown) |
| unidentified(adjective, new, remote, unknown, indefinite) |
| unnoted(adjective, strange, new, remote, unknown) |
| unperceived(adjective, strange, new, remote, mysterious) |
| unrecognized(adjective, strange, new, remote, mysterious) |
| unrenowned(adjective, strange, new, remote, mysterious) |
| unrevealed(adjective, strange, new, remote, mysterious) |
| unsigned(adjective, unknown, undisclosed, nameless) |
| unspecified(adjective, strange, unknown, indefinite, undisclosed) |
| unsung(adjective, strange, new, remote, unknown) |
| untold(adjective, strange, new, remote, mysterious) |
| untruth(noun, slip, failure, fault, mistake) |
| vacate(verb, phrasal verb, law, remove, continue) |
| variable |
| waldo(noun, bar, thud) |