There are 16 words that start with 'infin'.
| infinite | infinity |
| infinites | infinitely |
| infinities | infinitive |
| infinitude | infinitival |
| infinitives | infinitudes |
| infiniteness | infinitively |
| infinitesimal | infinitenesses |
| infinitesimals | infinitesimally |
Note: These 16 words that start with 'infin' are found from the USA & Canada version of the tournament Scrabble word list.