There are 18 words that start with 'flip'.
| flip | flips | flippy | 
| flipped | flipper | flipbook | 
| flipflop | flippant | flippers | 
| flippest | flipping | flipbooks | 
| flipflops | flippancy | flippantly | 
| flipflopped | flippancies | flipflopping | 
Note: These 18 words that start with 'flip' are found from the USA & Canada version of the tournament Scrabble word list.