There are 13 words that start with 'ensi'.
| ensign | ensile | ensigns | 
| ensiled | ensiles | ensiform | 
| ensigncy | ensilage | ensiling | 
| ensilaged | ensilages | ensigncies | 
| ensilaging | ||
Note: These 13 words that start with 'ensi' are found from the USA & Canada version of the tournament Scrabble word list.