There are 6 14-letter words that start with 'cos'.
| cosmetologists | cosmochemistry |
| cosmographical | cosmologically |
| cosmopolitisms | cosponsorships |
Note: These 6 14-letter words that start with 'cos' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with cosm, cost, cosi, cose, cosh, coss, cosp, cosc, cosu, cosy.
4-letter words start with 'cos' (4)