There are 14 words that start with 'assim'.
| assimilate | assimilable |
| assimilated | assimilates |
| assimilator | assimilating |
| assimilation | assimilative |
| assimilators | assimilatory |
| assimilations | assimilability |
| assimilationism | assimilationist |
Note: These 14 words that start with 'assim' are found from the USA & Canada version of the tournament Scrabble word list.