There are 4 13-letter words that start with 'mus'.
| muscularities | musicianships |
| musicological | musicologists |
Note: These 4 13-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)