There are 16 words that start with 'copi'.
| copied | copier | 
| copies | coping | 
| copiers | copihue | 
| copilot | copings | 
| copious | copihues | 
| copilots | copiously | 
| copingstone | copiousness | 
| copingstones | copiousnesses | 
Note: These 16 words that start with 'copi' are found from the USA & Canada version of the tournament Scrabble word list.