There are 4 12-letter words that start with 'quin'.
| quinquennial | quinquennium | quintessence |
| quintillions | ||
Note: These 4 12-letter words that start with 'quin' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with quint, quino, quini, quinc, quinq, quina, quine, quins, quind, quinn.
5-letter words start with 'quin' (2)