There are 8 13-letter words that start with 'dev'.
| devastatingly | developmental | 
| deviationisms | deviationists | 
| deviousnesses | devolutionary | 
| devolutionist | devotednesses | 
Note: These 8 13-letter words that start with 'dev' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with devi, devo, deve, deva, devs.
4-letter words start with 'dev' (2)