There are 11 14-letter words that start with 'app'.
| apparentnesses | appendectomies |
| appendicectomy | appendicitises |
| apportionments | appositenesses |
| appreciatively | apprehensively |
| apprenticeship | appropriations |
| approximations | |
Note: These 11 14-letter words that start with 'app' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with appr, appe, appl, appo, appa, appu, apps.
4-letter words start with 'app' (1)