There are 13 words that start with 'inton'.
| intone | intoned | intoner | 
| intones | intonate | intoners | 
| intoning | intonated | intonates | 
| intonating | intonation | intonations | 
| intonational | ||
Note: These 13 words that start with 'inton' are found from the USA & Canada version of the tournament Scrabble word list.