There are 18 words that start with 'simo'.
| simony | simoom | simoon |
| simooms | simoons | simoleon |
| simoniac | simonies | simonist |
| simonize | simoleons | simoniacs |
| simonists | simonized | simonizes |
| simoniacal | simonizing | simoniacally |
Note: These 18 words that start with 'simo' are found from the USA & Canada version of the tournament Scrabble word list.