There are 15 words that start with 'cinc'.
| cinch | cinched | cinches |
| cinching | cinchona | cincture |
| cinchonas | cinchonic | cinctured |
| cinctures | cinchonine | cinchonism |
| cincturing | cinchonines | cinchonisms |
Note: These 15 words that start with 'cinc' are found from the USA & Canada version of the tournament Scrabble word list.