There are 8 14-letter words that start with 'coc'.
| cocainizations | cocarboxylases | 
| cocarcinogenic | cochairpersons | 
| cockeyednesses | cocksurenesses | 
| coconspirators | cocultivations | 
Note: These 8 14-letter words that start with 'coc' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with cock, coco, coca, coch, cocc, cocu, cocr, coci.
4-letter words start with 'coc' (3)