There are 14 words that start with 'specif'.
| specify | specific | 
| specifics | specified | 
| specifier | specifies | 
| specifiers | specifying | 
| specifiable | specificity | 
| specifically | specification | 
| specificities | specifications | 
Note: These 14 words that start with 'specif' are found from the USA & Canada version of the tournament Scrabble word list.