There are 12 14-letter words that start with 'fl'.
| flabbergasting | flagellantisms |
| flagitiousness | flammabilities |
| flannelmouthed | flawlessnesses |
| fleetingnesses | flimflammeries |
| floriculturist | flugelhornists |
| fluorographies | fluoroscopists |
Note: These 12 14-letter words that start with 'fl' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with fla, flo, flu, fle, fli, fly.
3-letter words start with 'fl' (2)