There are 14 words that start with 'simi'.
| simian | simile | simians | 
| similar | similes | simioid | 
| simious | simitar | simitars | 
| similarly | similarity | similitude | 
| similitudes | similarities | |
Note: These 14 words that start with 'simi' are found from the USA & Canada version of the tournament Scrabble word list.