There are 4 14-letter words that start with 'carb'.
| carbonizations | carbonylations | 
| carboxylations | carburizations | 
Note: These 4 14-letter words that start with 'carb' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with carbo, carbu, carba, carbi, carbs.
5-letter words start with 'carb' (2)