There are 9 words that start with 'synec'.
| synectic | synecdoche | 
| synecology | synecdoches | 
| synecdochic | synecologies | 
| synecdochical | synecological | 
| synecdochically | |
Note: These 9 words that start with 'synec' are found from the USA & Canada version of the tournament Scrabble word list.