There are 16 words that start with 'unim'.
| unimbued | unimpeded |
| unimpaired | unimposing |
| unimproved | unimmunized |
| unimportant | unimpressed |
| unimaginable | unimaginably |
| unimpressive | unimaginative |
| unimpassioned | unimpeachable |
| unimpeachably | unimaginatively |
Note: These 16 words that start with 'unim' are found from the USA & Canada version of the tournament Scrabble word list.