There are 8 14-letter words that start with 'ass'.
| assassinations | assaultiveness |
| assimilability | assistantships |
| associateships | associationism |
| associationist | assumabilities |
Note: These 8 14-letter words that start with 'ass' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with asse, assi, assa, assu, asso, assw, assh, assl.
5-letter words start with 'ass' (4)