There are 12 words that start with 'inact'.
| inaction | inactive |
| inactions | inactivate |
| inactively | inactivity |
| inactivated | inactivates |
| inactivating | inactivation |
| inactivities | inactivations |
Note: These 12 words that start with 'inact' are found from the USA & Canada version of the tournament Scrabble word list.