There are 17 words that start with 'defea'.
| defeat | defeats |
| defeated | defeater |
| defeaters | defeating |
| defeatism | defeatist |
| defeature | defeasance |
| defeasible | defeatisms |
| defeatists | defeatures |
| defeasances | defeasibility |
| defeasibilities | |
Note: These 17 words that start with 'defea' are found from the USA & Canada version of the tournament Scrabble word list.