There are 45 9-letter words that start with 'fire'.
Note: These 45 9-letter words that start with 'fire' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with fireb, firep, firef, firew, fires, fired, firel, firet, firea, firec, fireh, firer, firem, fireg.
5-letter words start with 'fire' (3)