There are 5 15-letter words that start with 'dic'.
| dichlorobenzene | dichloroethanes | 
| dichotomization | dichotomousness | 
| dictatorialness | |
Note: These 5 15-letter words that start with 'dic' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with dich, dict, dick, dico, dice, dica, dicl, dicy, dicr, dici, dicu.
4-letter words start with 'dic' (2)