There are 14 words that start with 'sene'.
| sene | seneca | senega | 
| senecas | senecio | senegas | 
| senecios | senescent | seneschal | 
| senescence | seneschals | senectitude | 
| senescences | senectitudes | |
Note: These 14 words that start with 'sene' are found from the USA & Canada version of the tournament Scrabble word list.