There are 14 words that start with 'impost'.
| impost | imposts | imposted |
| imposter | impostor | imposters |
| imposting | impostors | impostume |
| imposture | imposthume | impostumes |
| impostures | imposthumes | |
Note: These 14 words that start with 'impost' are found from the USA & Canada version of the tournament Scrabble word list.