There are 12 words that start with 'cartel'.
| cartel | cartels | 
| cartelise | cartelize | 
| cartelised | cartelises | 
| cartelized | cartelizes | 
| cartelising | cartelizing | 
| cartelization | cartelizations | 
Note: These 12 words that start with 'cartel' are found from the USA & Canada version of the tournament Scrabble word list.