| Unpracticed in | 14 |
| Unprecedented | 13 |
| Unprecedented events | 20 |
| Unpredictable | 13 |
| Unpredictable "Mask" actor? | 37 |
| Unpredictable and terminal errors, one after the other! | 55 |
| Unpredictable current | 21 |
| Unpredictable currents | 22 |
| Unpredictable determinant | 25 |
| Unpredictable element | 21 |
| Unpredictable events | 20 |
| Unpredictable factor | 20 |
| Unpredictable factors | 21 |
| Unpredictable influence | 23 |
| Unpredictable joint | 19 |
| Unpredictable occurrences | 25 |
| Unpredictable one | 17 |
| Unpredictable outcome | 21 |
| Unpredictable phenomenon | 24 |
| Unpredictable pitch | 19 |
| Unpredictable sort | 18 |
| Unpredictable state | 19 |
| Unpredictably | 13 |
| Unprejudiced | 12 |
| Unpremeditated homicide (nonsexist style) | 41 |
| Unprepared | 10 |
| Unprepared Chinese leader (who had secretly planned to get...) | 62 |
| Unprepared comment | 18 |
| Unprepared for shopping? | 24 |
| Unprepared student's dread | 30 |
| Unprepared tourist's surprise | 33 |
| Unprepared, as a sprinter in the blocks | 39 |
| Unprepossessing | 15 |
| Unprepossessing females | 23 |
| Unpressured | 11 |
| Unprestigious paper | 19 |
| Unprestigious publication | 25 |
| Unpretentious | 13 |
| Unpretentious eatery | 20 |
| Unpretentious in nature | 23 |
| Unpretentious instrument | 24 |
| Unpretentious one | 17 |
| Unpretentious quality | 21 |
| Unpretentious tavern | 20 |
| Unpretentious, in Paris | 23 |
| Unpretentious, in the South | 27 |
| Unpretentiousness | 17 |
| Unprevented by | 14 |
| Unpricey wine | 13 |
| Unprincipled | 12 |
| Unprincipled fellow | 19 |
| Unprincipled fellows | 20 |
| Unprincipled man | 16 |
| Unprincipled one | 16 |
| Unprincipled ones | 17 |
| Unprincipled operation? | 23 |
| Unprincipled politicians | 24 |
| Unprized possession | 19 |
| Unprocessed | 11 |
| Unprocessed information | 23 |
| Unprocessed orders | 18 |
| Unprocessed, as data | 20 |
| Unproductive | 12 |
| Unproductive bother | 19 |
| Unproductive commotion | 22 |
| Unproductive exercises | 22 |
| Unproductive path | 17 |
| Unproductive period | 19 |
| Unproductive pursuits | 21 |
| Unproductive sort | 17 |
| Unprofessional | 14 |
| Unprofessional film quality | 27 |
| Unprofessional one | 18 |
| Unprofessional, slangily | 24 |
| Unprofitable | 12 |
| Unprofitable, as a situation | 28 |
| Unpromising | 11 |
| Unpromising fate | 16 |
| Unpromising outlook | 19 |
| Unpromising words | 17 |
| Unpromising, as a chance | 24 |
| Unpromisingly stuck | 19 |
| Unpronounced | 12 |
| Unpropitiously | 14 |
| Unprosperous time, metaphorically | 33 |
| Unprotected | 11 |
| Unprotected chess piece | 23 |
| Unprotected from the sun | 24 |
| Unprotected, in a way | 21 |
| Unprotesting sufferer | 21 |
| Unproven | 8 |
| Unproven ability | 16 |
| Unproven ability, for short | 27 |
| Unproven facility | 17 |
| Unproven skill, briefly | 23 |
| Unprovoked | 10 |
| Unprovoked attack | 17 |
| Unpublished | 11 |
| Unpublished literary works | 26 |
| Unpublished literature | 22 |