There are 12 words that start with 'gratu'.
| gratuity | gratulate |
| gratuities | gratuitous |
| gratulated | gratulates |
| gratulating | gratulation |
| gratulatory | gratuitously |
| gratulations | gratuitousness |
Note: These 12 words that start with 'gratu' are found from the USA & Canada version of the tournament Scrabble word list.