There are 18 words that start with 'curta'.
| curtal | curtail | curtain | 
| curtals | curtate | curtails | 
| curtains | curtalax | curtailed | 
| curtailer | curtained | curtailers | 
| curtailing | curtaining | curtalaxes | 
| curtailment | curtainless | curtailments | 
Note: These 18 words that start with 'curta' are found from the USA & Canada version of the tournament Scrabble word list.