There are 11 words that start with 'flaw'.
| flaw | flaws | 
| flawy | flawed | 
| flawier | flawing | 
| flawiest | flawless | 
| flawlessly | flawlessness | 
| flawlessnesses | |
Note: These 11 words that start with 'flaw' are found from the USA & Canada version of the tournament Scrabble word list.