There are 18 9-letter words that start with 'sar'.
| sarabande | sarabands | sarcastic | 
| sarcenets | sarcocarp | sarcology | 
| sarcomata | sarcomere | sarcosome | 
| sardining | sardiuses | sargassos | 
| sargassum | sarmentum | sarodists | 
| sarsenets | sartorial | sartorius | 
Note: These 18 9-letter words that start with 'sar' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with sarc, sard, saro, sars, sara, sarg, sart, sark, sari, sarm, sare, sarr.
4-letter words start with 'sar' (3)