There are 32 9-letter words that start with 'outb'.
Note: These 32 9-letter words that start with 'outb' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with outbr, outbu, outba, outbl, outbo, outbi, outbe, outby.
5-letter words start with 'outb' (1)