There are 14 words that start with 'butyr'.
| butyral | butyric |
| butyrin | butyryl |
| butyrals | butyrate |
| butyrins | butyrous |
| butyryls | butyrates |
| butyraldehyde | butyrophenone |
| butyraldehydes | butyrophenones |
Note: These 14 words that start with 'butyr' are found from the USA & Canada version of the tournament Scrabble word list.