There are 11 words that start with 'segr'.
| segregant | segregate | 
| segregants | segregated | 
| segregates | segregating | 
| segregation | segregative | 
| segregations | segregationist | 
| segregationists | |
Note: These 11 words that start with 'segr' are found from the USA & Canada version of the tournament Scrabble word list.