There are 11 11-letter words that start with 'was'.
| washability | washaterias | washerwoman |
| washerwomen | washeterias | washinesses |
| waspinesses | waspishness | wastebasket |
| wastepapers | wastewaters | |
Note: These 11 11-letter words that start with 'was' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with wash, wast, wasp, wass, wasa.
4-letter words start with 'was' (3)