There are 15 words that start with 'dulc'.
| dulcet | dulcets | dulcify | 
| dulcetly | dulciana | dulcimer | 
| dulcinea | dulcianas | dulcified | 
| dulcifies | dulcimers | dulcimore | 
| dulcineas | dulcifying | dulcimores | 
Note: These 15 words that start with 'dulc' are found from the USA & Canada version of the tournament Scrabble word list.