There are 12 words that start with 'disac'.
| disaccord | disaccords | 
| disaccorded | disaccustom | 
| disaccharide | disaccording | 
| disaccustoms | disaccharides | 
| disaccustomed | disaccharidase | 
| disaccustoming | disaccharidases | 
Note: These 12 words that start with 'disac' are found from the USA & Canada version of the tournament Scrabble word list.