There are 13 9-letter words that start with 'roo'.
| rooflines | rooftrees | rookeries |
| roomettes | roominess | roommates |
| roorbachs | roorbacks | rootholds |
| rootiness | rootstalk | rootstock |
| rootworms | ||
Note: These 13 9-letter words that start with 'roo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with root, room, roof, roos, rook, roor, rood.
4-letter words start with 'roo' (5)