There are 7 12-letter words that start with 'dea'.
| deacidifying | deactivating | deactivation |
| deactivators | deadlinesses | deaminations |
| deathwatches | ||
Note: These 7 12-letter words that start with 'dea' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with dead, deat, deac, deal, deaf, deam, dear, deae, dean, deas, deai, deav.
4-letter words start with 'dea' (5)