There are 8 12-letter words that start with 'woo'.
| woodchoppers | woodcuttings | woodenheaded |
| woodennesses | woodshedding | woodworkings |
| woolgatherer | woollinesses | |
Note: These 8 12-letter words that start with 'woo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with wood, wool, woof, wooz, woos, woop, woor, wooe, wooi, woom.
4-letter words start with 'woo' (4)