There are 16 words that start with 'yam'.
yam | yams | yamen |
yamun | yamens | yammer |
yamuns | yamalka | yammers |
yamulka | yamalkas | yammered |
yammerer | yamulkas | yammerers |
yammering | ||
Note: These 16 words that start with 'yam' are found from the USA & Canada version of the tournament Scrabble word list.