There are 13 words that start with 'saniti'.
| sanities | sanitise | 
| sanitize | sanitised | 
| sanitises | sanitized | 
| sanitizer | sanitizes | 
| sanitising | sanitizers | 
| sanitizing | sanitization | 
| sanitizations | |
Note: These 13 words that start with 'saniti' are found from the USA & Canada version of the tournament Scrabble word list.