| undefined |
| undeveloped(adjective, vague, indefinite, deformed, formless) |
| undone(adjective, clear, separate, free, easy) |
| unfashionable(plain, shabby, drab, dingy, antiquated) |
| unfastened(adjective, clear, separate, free, easy) |
| unfettered(adjective, clear, separate, free, easy) |
| unfit(adjective, weak, soft, sloppy, fat) |
| unformed(adjective, character, vague, indefinite, deformed) |
| ungraceful(adjective, vague, indefinite, deformed, formless) |
| unhinged(adjective, clear, separate, free, easy) |
| unhooked(adjective, clear, separate, free, easy) |
| unlatched(adjective, clear, separate, free, easy) |
| unlocked(adjective, clear, separate, free, easy) |
| unmade(adjective, vague, indefinite, deformed, formless) |
| unordered |
| unorganized |
| unpinned(adjective, clear, separate, free, easy) |
| unrestrained(adjective, clear, easy, relaxed, loose) |
| unrestricted(adjective, clear, separate, free, easy) |
| unsecured(adjective, clear, separate, free, easy) |