There are 14 words that start with 'flum'.
| flume | flump | flumed | 
| flumes | flumps | fluming | 
| flummox | flumped | flummery | 
| flumping | flummoxed | flummoxes | 
| flummeries | flummoxing | |
Note: These 14 words that start with 'flum' are found from the USA & Canada version of the tournament Scrabble word list.