There are 18 words that start with 'autop'.
| autopen | autopsy |
| autopens | autopsic |
| autophagy | autophyte |
| autopilot | autopsied |
| autopsies | autopsist |
| autophytes | autopilots |
| autopsists | autopsying |
| autophagies | autopolyploid |
| autopolyploids | autopolyploidy |
Note: These 18 words that start with 'autop' are found from the USA & Canada version of the tournament Scrabble word list.