There are 21 words that start with 'expi'.
| expire | expiry | expiate |
| expired | expirer | expires |
| expiable | expiated | expiates |
| expiator | expirers | expiries |
| expiring | expiating | expiation |
| expiators | expiatory | expiations |
| expiration | expiratory | expirations |
Note: These 21 words that start with 'expi' are found from the USA & Canada version of the tournament Scrabble word list.