There are 16 words that start with 'stir'.
stir | stirk | stirp |
stirs | stirks | stirps |
stirpes | stirred | stirrer |
stirrup | stirrers | stirring |
stirrups | stirabout | stirrings |
stirabouts | ||
Note: These 16 words that start with 'stir' are found from the USA & Canada version of the tournament Scrabble word list.