Alphabetic U
| 1 | unthinkable | adjective | See |
| 2 | unscrupulous | adjective | See |
| 3 | upheaval | noun | See |
| 4 | undercover | adjective | See |
| 5 | unconscionable | adjective | See |
| 6 | underling | noun | See |
| 7 | uproot | verb | See |
| 8 | unforgiving | adjective | See |
| 9 | unflappable | adjective | See |
| 10 | uneasy | adjective | See |
| 11 | unrepentant | adjective | See |
| 12 | undoing | noun | See |