There are 17 words that start with 'foam'.
| foam | foams | foamy |
| foamed | foamer | foamers |
| foamier | foamily | foaming |
| foamable | foamiest | foamless |
| foamlike | foaminess | foamflower |
| foamflowers | foaminesses | |
Note: These 17 words that start with 'foam' are found from the USA & Canada version of the tournament Scrabble word list.