There are 6 12-letter words that start with 'mod'.
| moderateness | modernnesses | modification | 
| modishnesses | modulability | modularities | 
Note: These 6 12-letter words that start with 'mod' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with mode, modi, modu, moda, mods.
4-letter words start with 'mod' (3)