There are 17 words that start with 'dua'.
| duad | dual |
| duads | duals |
| dually | dualism |
| dualist | duality |
| dualize | dualisms |
| dualists | dualized |
| dualizes | dualistic |
| dualities | dualizing |
| dualistically | |
Note: These 17 words that start with 'dua' are found from the USA & Canada version of the tournament Scrabble word list.