There are 10 words that start with 'subpo'.
| subpoena | subpolar |
| subpoenas | subpotent |
| subpoenaed | subpotency |
| subpoenaing | subpotencies |
| subpopulation | subpopulations |
Note: These 10 words that start with 'subpo' are found from the USA & Canada version of the tournament Scrabble word list.