There are 15 11-letter words that start with 'mus'.
| muscularity | musculature | museologies |
| museologist | mushinesses | mushrooming |
| musicalised | musicalises | musicalized |
| musicalizes | muskellunge | muskinesses |
| mussinesses | mustachioed | mustinesses |
Note: These 15 11-letter words that start with 'mus' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with musi, musc, must, musk, mush, muse, muss, musj, musl, musp, musq.
4-letter words start with 'mus' (5)