There are 2 13-letter words that start with 'mut'.
mutagenically | mutualization |
Note: These 2 13-letter words that start with 'mut' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with muti, muta, mutu, mutt, mute, mutc, muto, muts.
4-letter words start with 'mut' (3)