There are 16 words that start with 'catap'.
| catapult | cataphora | cataphyll | 
| cataplasm | cataplexy | catapults | 
| cataphoras | cataphoric | cataphylls | 
| cataplasms | catapulted | cataplexies | 
| catapulting | cataphoreses | cataphoresis | 
| cataphoretic | ||
Note: These 16 words that start with 'catap' are found from the USA & Canada version of the tournament Scrabble word list.