There are 6 13-letter words that start with 'cur'.
| curablenesses | curarizations | 
| curiousnesses | currentnesses | 
| cursivenesses | cursorinesses | 
Note: These 6 13-letter words that start with 'cur' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with cura, curr, curt, curs, curv, curl, curi, cure, curd, curb, curc, curf, curm, curn, curu.
4-letter words start with 'cur' (9)