| KEYWORD | DESCRIPTION | 3-DIGIT | 4-DIGIT |
|---|---|---|---|
| UKULELE | Playing a ukulele. | 055 | 4597 |
| ULCERS | Suffer from ulcers. | 948 | 2659 |
| UMBRELLA | Secured an umbrella insurance policy. | 213 | 8523 |
| UMBRELLA | Using an umbrella in a rain storm. | 310 | 1303 |
| UMPIRE | Acting as an umpire. | 271 | 6702 |
| UMW | Joined the United Mine Workers. | 327 | 1040 |
| UN | Visited the United Nations Headquarters. | 825 | 8806 |
| UNCLE | Became an uncle. | 837 | 4891 |
| UNCLE SAM | Dressed like Uncle Sam for a parade. | 310 | 7638 |
| UNCONSCIOUS | Became unconscious. | 351 | 5268 |
| UNCORK | Opened a bottle of wine. | 656 | 5876 |
| UNDER ARREST | Was placed under arrest. | 950 | 1606 |
| UNDER A SPELL | Was placed under a spell. | 905 | 4609 |
| UNDER ATTACK | Became under attack. | 995 | 1796 |
| UNDERBRUSH | Clearing underbrush. | 755 | 5318 |
| UNDER COAT | Had an under coat applied to a car. | 842 | 2404 |
| UNDERCOVER | Working undercover. | 274 | 2396 |
| UNDERGROUND | Traveled underground. | 722 | 1430 |
| UNDERSTUDY | Was an understudy in a play. | 632 | 7796 |
| UNDER SUSPICION | Was placed under suspicion. | 957 | 0647 |
| UNDERTAKER | Consulted a funeral director. | 979 | 6771 |
| UNDERTOW | Caught in an undertow. | 867 | 2622 |
| UNDERWATER | Swimming underwater. | 178 | 1047 |
| UNDERWAY | Got a ship or boat underway. | 664 | 7443 |
| UNDERWEAR | Washing underwear. | 416 | 5096 |
| UNDERWEIGHT | Being underweight. | 205 | 7902 |
| UNDERWORLD | Working in the underworld. | 980 | 0608 |
| UNEMPLOYED | Applied for unemployment benefits. | 277 | 5845 |
| UNEMPLOYED | Became unemployed. | 149 | 1316 |
| UNEMPLOYMENT | Collecting unemployment benefits. | 945 | 8493 |
| UNFAITHFUL | Was unfaithful. | 951 | 5091 |
| UNIFORM | Rented a uniform. | 516 | 1057 |
| UNIFORM | Wearing a military uniform. | 799 | 0652 |
| UNIFORM | Wearing a uniform on a job. | 326 | 4761 |
| UNION | Attending a union meeting. | 211 | 4787 |
| UNION | Joined a labor union. | 384 | 6648 |
| UNION | Negotiated a labor contract. | 847 | 3743 |
| UNIONIZE | Formed a union. | 249 | 2874 |
| UNION SHOP | Working at a union shop. | 172 | 3721 |
| UNION SUIT | Wearing a union suit. | 702 | 0077 |
| UNITED STATES | Became a citizen. | 903 | 8030 |
| UNIVERSE | Traveled the universe. | 384 | 5397 |
| UNIVERSITY | Attending a university. | 708 | 6412 |
| UNIVERSITY | Received a degree. | 451 | 0318 |
| UNLOAD | Unloading a truck. | 502 | 0213 |
| UNPACK | Unpacking after a trip. | 337 | 2265 |
| UNRAVEL | Having a garment unravel. | 891 | 0910 |
| UPHOLSTER | Had furniture upholstered. | 512 | 2727 |
| UPHOLSTERY | Cleaning upholstery. | 379 | 6095 |
| UPLOAD | Uploaded a computer file. | 188 | 8457 |
| UPS | Shipped a package via United Parcel Service. | 849 | 8905 |
| UPSIDE-DOWN | Baked an upside-down cake. | 089 | 9289 |
| URL | Established a URL address on the web. | 563 | 1486 |
| USED CAR | Bought a used car. | 581 | 3216 |
| USHER | Being seated by an usher. | 331 | 0116 |
| UTOPIA | Living in a utopia. | 637 | 0710 |
