There are 14 words that start with 'dewa'.
| dewan | dewar | dewax | 
| dewans | dewars | dewater | 
| dewaxed | dewaxes | dewaters | 
| dewaxing | dewatered | dewaterer | 
| dewaterers | dewatering | |
Note: These 14 words that start with 'dewa' are found from the USA & Canada version of the tournament Scrabble word list.