There are 17 14-letter words that start with 'prec'.
Note: These 17 14-letter words that start with 'prec' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with preco, preci, prece, preca, precl, prech, precu, precr.
6-letter words start with 'prec' (2)