There are 4 15-letter words that start with 'mel'.
| mellifluousness | melodiousnesses | 
| melodramatising | melodramatizing | 
Note: These 4 15-letter words that start with 'mel' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with mela, melo, meli, mell, melt, meld, mele, melp, mels.
4-letter words start with 'mel' (4)