There are 13 words that start with 'curtai'.
| curtail | curtain | curtails | 
| curtains | curtailed | curtailer | 
| curtained | curtailers | curtailing | 
| curtaining | curtailment | curtainless | 
| curtailments | ||
Note: These 13 words that start with 'curtai' are found from the USA & Canada version of the tournament Scrabble word list.