There are 18 words that start with 'ampu'.
| ampul | ampule | ampuls |
| ampules | ampulla | amputee |
| ampullae | ampullar | amputate |
| amputees | ampullary | amputated |
| amputates | amputator | amputating |
| amputation | amputators | amputations |
Note: These 18 words that start with 'ampu' are found from the USA & Canada version of the tournament Scrabble word list.