There are 10 words that start with 'quinc'.
| quince | quinces |
| quincunx | quincunxes |
| quincuncial | quincunxial |
| quincentenary | quincentennial |
| quincentenaries | quincentennials |
Note: These 10 words that start with 'quinc' are found from the USA & Canada version of the tournament Scrabble word list.