There are 21 words that start with 'stem'.
| stem | stems | stemma |
| stemmy | stemmas | stemmed |
| stemmer | stemson | stemless |
| stemlike | stemmata | stemmers |
| stemmery | stemmier | stemming |
| stemsons | stemware | stemmatic |
| stemmiest | stemwares | stemmeries |
Note: These 21 words that start with 'stem' are found from the USA & Canada version of the tournament Scrabble word list.